commit 2ec442c086cc8d949842f82ec7e749da2c2ce791
Author: Fenris Wolf <fenris@folksprak.org>
Date:   Fri Mar 6 08:37:53 2026 +0100

    [ini]

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5e8147f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.geany
+build/
diff --git a/source/data/conf.json b/source/data/conf.json
new file mode 100644
index 0000000..87f9904
--- /dev/null
+++ b/source/data/conf.json
@@ -0,0 +1,5 @@
+{
+	"baseurl": "https://api.nextbike.net/api/api.php",
+	"apikey": "xEsFhYZR5jpO1Ug1"
+}
+
diff --git a/source/data/localization/de.json b/source/data/localization/de.json
new file mode 100644
index 0000000..1946021
--- /dev/null
+++ b/source/data/localization/de.json
@@ -0,0 +1,13 @@
+{
+	"username": "Telefon-Nummer",
+	"password": "Passwort",
+	"bikename": "Rad-Nummer",
+	"login": "Anmelden",
+	"logout": "Abmelden",
+	"rent": "Leihe hinzufügen",
+	"start": "starten",
+	"open": "Schloss öffnen",
+	"pause": "unterbrechen",
+	"finish": "beenden"
+}
+
diff --git a/source/data/localization/en.json b/source/data/localization/en.json
new file mode 100644
index 0000000..cf50ee8
--- /dev/null
+++ b/source/data/localization/en.json
@@ -0,0 +1,13 @@
+{
+	"username": "phone number",
+	"password": "password",
+	"bikename": "bike number",
+	"login": "login",
+	"logout": "logout",
+	"rent": "add rental",
+	"start": "start",
+	"open": "open lock",
+	"pause": "break",
+	"finish": "finish"
+}
+
diff --git a/source/data/localization/eo.json b/source/data/localization/eo.json
new file mode 100644
index 0000000..5a70c5b
--- /dev/null
+++ b/source/data/localization/eo.json
@@ -0,0 +1,13 @@
+{
+	"username": "telefon-nombro",
+	"password": "pasvorto",
+	"bikename": "biciklo-nombro",
+	"login": "ensaluti",
+	"logout": "elsaluti",
+	"rent": "aldoni pruntajxon",
+	"start": "komenci",
+	"open": "malfermi sxlosilon",
+	"pause": "halti",
+	"finish": "finigi"
+}
+
diff --git a/source/fonts/strogg.ttf b/source/fonts/strogg.ttf
new file mode 100644
index 0000000..c28590b
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diff --git a/source/fonts/strogg.woff b/source/fonts/strogg.woff
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index 0000000..2c26a40
Binary files /dev/null and b/source/fonts/strogg.woff differ
diff --git a/source/fonts/strogg.woff2 b/source/fonts/strogg.woff2
new file mode 100644
index 0000000..a1f3cab
Binary files /dev/null and b/source/fonts/strogg.woff2 differ
diff --git a/source/logic/base.ts b/source/logic/base.ts
new file mode 100644
index 0000000..61b835c
--- /dev/null
+++ b/source/logic/base.ts
@@ -0,0 +1 @@
+type int = number;
diff --git a/source/logic/control/app.ts b/source/logic/control/app.ts
new file mode 100644
index 0000000..eadbf39
--- /dev/null
+++ b/source/logic/control/app.ts
@@ -0,0 +1,53 @@
+namespace mod_control.app
+{
+	
+	/**
+	 */
+	export function setup
+	(
+		platform : lib_mvc.type_model<mod_platform.app.web.type_state>
+	) : Promise<void>
+	{
+		let context_dom : HTMLElement = platform.state.element_dom;
+		context_dom.querySelector(".app_login > button").addEventListener
+		(
+			"click",
+			(event) =>
+			{
+				const username : string = ((document.querySelector(".app_username > input") as HTMLInputElement)).value;
+				const password : string = ((document.querySelector(".app_password > input") as HTMLInputElement)).value;
+				mod_model.app.login(platform.state.model, username, password);
+			}
+		);
+		context_dom.querySelector(".app_logout > button").addEventListener
+		(
+			"click",
+			(event) =>
+			{
+				mod_model.app.logout(platform.state.model);
+			}
+		);
+		context_dom.querySelector(".app_rent > button").addEventListener
+		(
+			"click",
+			(event) =>
+			{
+				mod_model.app.prepare_rental(platform.state.model);
+			}
+		);
+		return Promise.resolve<void>(undefined);
+	}
+	
+	
+	/**
+	 */
+	export function implementation_control
+	(
+	) : lib_mvc.type_control<mod_platform.app.web.type_state>
+	{
+		return {
+			"setup": (model) => setup(model),
+		};
+	}
+	
+}
diff --git a/source/logic/control/rental.ts b/source/logic/control/rental.ts
new file mode 100644
index 0000000..5103572
--- /dev/null
+++ b/source/logic/control/rental.ts
@@ -0,0 +1,68 @@
+namespace mod_control.rental
+{
+	
+	/**
+	 */
+	export function setup
+	(
+		platform : lib_mvc.type_model<mod_platform.rental.web.type_state>
+	) : Promise<void>
+	{
+		let context_dom : HTMLElement = platform.state.element_dom;
+		context_dom.querySelector(".rental_start").addEventListener
+		(
+			"click",
+			(event) =>
+			{
+				const bike_name : string = lib_call.convey
+				(
+					platform.state.model.state.id,
+					[
+						x => lib_string.coin(".rental[rel=\"{{rel}}\"] > .rental_bike > input", {"rel": x}),
+						x => (document.querySelector(x) as HTMLInputElement),
+						x => x.value,
+					]
+				);
+				mod_model.rental.start(platform.state.model, bike_name);
+			}
+		);
+		context_dom.querySelector(".rental_open > button").addEventListener
+		(
+			"click",
+			(event) =>
+			{
+				mod_model.rental.open(platform.state.model);
+			}
+		);
+		context_dom.querySelector(".rental_pause > button").addEventListener
+		(
+			"click",
+			(event) =>
+			{
+				mod_model.rental.pause(platform.state.model);
+			}
+		);
+		context_dom.querySelector(".rental_finish > button").addEventListener
+		(
+			"click",
+			(event) =>
+			{
+				mod_model.rental.end(platform.state.model);
+			}
+		);
+		return Promise.resolve<void>(undefined);
+	}
+	
+	
+	/**
+	 */
+	export function implementation_control
+	(
+	) : lib_mvc.type_control<mod_platform.rental.web.type_state>
+	{
+		return {
+			"setup": (model) => setup(model),
+		};
+	}
+	
+}
diff --git a/source/logic/helpers/call.ts b/source/logic/helpers/call.ts
new file mode 100644
index 0000000..bdf8e88
--- /dev/null
+++ b/source/logic/helpers/call.ts
@@ -0,0 +1,24 @@
+namespace lib_call
+{
+	
+	/**
+	 */
+	export function convey
+	(
+		value : any,
+		functions : Array<Function>
+	) : any
+	{
+		let result : any = value;
+		functions.forEach
+		(
+			function_ =>
+			{
+				result = function_(result);
+			}
+		);
+		return result;
+	}
+	
+}
+
diff --git a/source/logic/helpers/conf.ts b/source/logic/helpers/conf.ts
new file mode 100644
index 0000000..71764d1
--- /dev/null
+++ b/source/logic/helpers/conf.ts
@@ -0,0 +1,32 @@
+
+namespace lib_conf
+{
+	
+	/**
+	 */
+	var _data : any;
+	
+	
+	/**
+	 */
+	export async function load
+	(
+		path : string
+	) : Promise<void>
+	{
+		_data = await fetch(path, {"method": "GET"}).then(x => x.json())
+	}
+	
+	
+	/**
+	 */
+	export function get
+	(
+		key : string
+	) : any
+	{
+		return _data[key];
+	}
+	
+}
+
diff --git a/source/logic/helpers/dom.ts b/source/logic/helpers/dom.ts
new file mode 100644
index 0000000..65a1b23
--- /dev/null
+++ b/source/logic/helpers/dom.ts
@@ -0,0 +1,68 @@
+namespace lib_dom
+{
+	
+	/**
+	 * @author fenris
+	 */
+	export function clone(
+		element : Element,
+		options : {
+			context ?: Document;
+		} = {}
+	) : Node
+	{
+		options = Object.assign(
+			{
+				"context": document,
+			},
+			options
+		);
+		return options.context.importNode(element, true);
+	}
+	
+	
+	/**
+	 * @author fenris
+	 */
+	export function request(
+		id : string,
+		options : {
+			context ?: Document;
+			arguments ?: (null | Record<string, any>);
+		} = {}
+	) : DocumentFragment
+	{
+		options = Object.assign(
+			{
+				"context": document,
+				"arguments": null,
+			},
+			options
+		);
+		const template : (null | Element) = document.querySelector("template#" + id);
+		if (template === null) {
+			throw (new Error("template not found: " + id));
+		}
+		else {
+			const fragment : DocumentFragment = (
+				clone(
+					template["content"],
+					{
+						"context": options.context,
+					}
+				) as DocumentFragment
+			);
+			if (options.arguments === null) {
+				// do nothing
+			}
+			else {
+				for (let index : int = 0; index < fragment.children.length; index += 1) {
+					const element : Element = fragment.children[index];
+					element.innerHTML = lib_string.coin(element.innerHTML, options.arguments);
+				}
+			}
+			return fragment;
+		}
+	}
+	
+}
diff --git a/source/logic/helpers/loc.ts b/source/logic/helpers/loc.ts
new file mode 100644
index 0000000..7a06e60
--- /dev/null
+++ b/source/logic/helpers/loc.ts
@@ -0,0 +1,168 @@
+namespace lib_loc
+{
+	
+	/**
+	 */
+	var _data : Record<string, Record<string, string>> = {};
+	
+	
+	/**
+	 */
+	var _language_order : Array<string> = [];
+	
+	
+	/**
+	 */
+	var _resolve_path : ((language : string) => string);
+	
+	
+	/**
+	 */
+	async function load
+	(
+		language : string
+	) : Promise<void>
+	{
+		if (_data.hasOwnProperty(language))
+		{
+			// do nothing
+		}
+		else
+		{
+			try
+			{
+				_data[language] = ((await fetch(_resolve_path(language), {"method": "GET"}).then(x => x.json())) as Record<string, string>);
+			}
+			catch (error)
+			{
+				console.warn
+				(
+					lib_string.coin
+					(
+						"could not load localization data for language '{{language}}': {{error}}",
+						{
+							"language": language,
+							"error": String(error),
+						}
+					)
+				);
+			}
+		}
+		// return Promise.resolve<void>(undefined);
+	}
+	
+	
+	/**
+	 */
+	export function get
+	(
+		key : string,
+		options :
+		{
+			language ?: (null | string);
+		} = {}
+	) : string
+	{
+		options = Object.assign
+		(
+			{
+				"language": null,
+			},
+			options
+		);
+		const language_list : Array<string> = (
+			[]
+			.concat((options.language === null) ? [] : [options.language])
+			.concat(_language_order)
+		);
+		for (const language of language_list)
+		{
+			if (_data.hasOwnProperty(language) && _data[language].hasOwnProperty(key))
+			{
+				return _data[language][key];
+			}
+			else
+			{
+				// do nothing
+			}
+		}
+		return ("{" + key + "}");
+	}
+	
+	
+	/**
+	 */
+	export function translate_item
+	(
+		selector : string,
+		key : string,
+		options :
+		{
+			kind ?: string;
+			parameters ?: Record<string, any>;
+			language ?: (null | string);
+			context ?: (HTMLElement | DocumentFragment);
+		} = {}
+	) : void
+	{
+		options = Object.assign
+		(
+			{
+				"kind": "textcontent",
+				"parameters": {},
+				"language": null,
+				"context": document,
+			},
+			options
+		);
+		const dom_element : Element = options.context.querySelector(selector);
+		const value : string = get(key, {"language": options.language});
+		switch (options.kind)
+		{
+			default:
+			{
+				console.warn("unhandeld kind");
+				break;
+			}
+			case "textcontent":
+			{
+				dom_element.textContent = value;
+				break;
+			}
+			case "attribute":
+			{
+				dom_element.setAttribute(options.parameters["key"], value);
+				break;
+			}
+		}
+	}
+	
+	
+	/**
+	 */
+	export async function setup
+	(
+		language_order : Array<string>,
+		options : 
+		{
+			resolve_path ?: ((language : string) => string),
+		} = {}
+	) : Promise<void>
+	{
+		options = Object.assign
+		(
+			{
+				"resolve_path": (language => lib_string.coin("localization/{{language}}.json", {"language": language})),
+			},
+			options
+		);
+		_resolve_path = options.resolve_path;
+		_language_order = language_order;
+		for await (const language of _language_order)
+		{
+			await load(language);
+		}
+	}
+	
+}
+
diff --git a/source/logic/helpers/mvc.ts b/source/logic/helpers/mvc.ts
new file mode 100644
index 0000000..b3723e3
--- /dev/null
+++ b/source/logic/helpers/mvc.ts
@@ -0,0 +1,166 @@
+namespace lib_mvc
+{
+	
+	/**
+	 */
+	export type type_event<type_data> = {
+		type : string;
+		data : type_data;
+	};
+	
+	
+	/**
+	 */
+	export type type_model<type_state> =
+	{
+		listeners : Array<((event : type_event<any>) => Promise<void>)>;
+		state : type_state;
+	};
+	
+	
+	/**
+	 */
+	export type type_view<type_state> =
+	{
+		setup : ((model : type_model<type_state>) => Promise<void>);
+		update : ((model : type_model<type_state>, event : type_event<any>) => Promise<void>);
+	};
+	
+	
+	/**
+	 */
+	export type type_control<type_state> =
+	{
+		setup : ((model : type_model<type_state>) => Promise<void>);
+	};
+	
+	
+	/**
+	 */
+	export type type_complex<type_state> =
+	{
+		model : type_model<type_state>;
+		views : Array<type_view<type_state>>;
+		controls : Array<type_control<type_state>>;
+	};
+	
+	
+	/**
+	 */
+	export function model_make<type_state>
+	(
+		state : type_state
+	) : type_model<type_state>
+	{
+		return {
+			"listeners": [],
+			"state": state,
+		};
+	}
+	
+	
+	/**
+	 */
+	export function model_listen<type_state, type_data>
+	(
+		model : type_model<type_state>,
+		action : ((event : type_event<type_data>) => Promise<void>)
+	) : void
+	{
+		model.listeners.push(action);
+	}
+	
+	
+	/**
+	 */
+	export async function model_notify<type_state, type_data>
+	(
+		model : type_model<type_state>,
+		event : type_event<type_data>
+	) : Promise<void>
+	{
+		for await (const action of model.listeners)
+		{
+			action(event);
+		}
+	}
+	
+	
+	/**
+	 */
+	export async function view_setup<type_state>
+	(
+		view : type_view<type_state>,
+		model : type_model<type_state>,
+		options :
+		{
+			blocking ?: boolean;
+		} = {}
+	) : Promise<void>
+	{
+		options = Object.assign
+		(
+			{
+				"blocking": true,
+			},
+			options
+		);
+		await view.setup(model);
+		model_listen
+		(
+			model,
+			(info) =>
+			{
+				if (options.blocking)
+				{
+					return view.update(model, info);
+				}
+				else
+				{
+					view.update(model, info);
+					return Promise.resolve<void>(undefined);
+				}
+			}
+		);
+	}
+	
+	
+	/**
+	 */
+	export async function control_setup<type_state>
+	(
+		control : type_control<type_state>,
+		model : type_model<type_state>,
+		options :
+		{
+		} = {}
+	) : Promise<void>
+	{
+		options = Object.assign
+		(
+			{
+			},
+			options
+		);
+		await control.setup(model);
+	}
+	
+	
+	/**
+	 */
+	export async function complex_setup<type_state>
+	(
+		complex : type_complex<type_state>
+	) : Promise<void>
+	{
+		for await (const view of complex.views)
+		{
+			await view_setup<type_state>(view, complex.model);
+		}
+		for await (const control of complex.controls)
+		{
+			await control_setup<type_state>(control, complex.model);
+		}
+	}
+	
+}
diff --git a/source/logic/helpers/nextbike.ts b/source/logic/helpers/nextbike.ts
new file mode 100644
index 0000000..4c9f9c7
--- /dev/null
+++ b/source/logic/helpers/nextbike.ts
@@ -0,0 +1,211 @@
+namespace lib_nextbike
+{
+	
+	/**
+	 */
+	let _baseurl : (null | string) = null;
+	
+	
+	/**
+	 */
+	let _apikey : (null | string) = null;
+	
+	
+	/**
+	 */
+	let _testmode : boolean = false;
+	
+	
+	/**
+	 */
+	export function setup
+	(
+		baseurl : string,
+		apikey : string,
+		options :
+		{
+			testmode ?: boolean;
+		} = {}
+	) : void
+	{
+		options = Object.assign
+		(
+			{
+				"testmode": false,
+			},
+			options
+		);
+		_baseurl = baseurl;
+		_apikey = apikey;
+		_testmode = options.testmode;
+	}
+	
+	
+	/**
+	 */
+	async function api_call
+	(
+		action : string,
+		loginkey : (null | string),
+		input : Record<string, string>
+	) : Promise<any>
+	{
+		if ((_baseurl === null) || (_apikey === null))
+		{
+			throw (new Error("API not set up yet; execute 'setup' function"));
+		}
+		else
+		{
+			if (_testmode)
+			{
+				return {
+					"user": {
+						"loginkey": "",
+					},
+				};
+			}
+			else
+			{
+				return (
+					fetch
+					(
+						lib_string.coin
+						(
+							"{{baseurl}}?{{query}}",
+							{
+								"baseurl": _baseurl,
+								"query": lib_call.convey
+								(
+									{
+										"version": "v2",
+										"format": "json",
+										"apikey": _apikey,
+										"action": action,
+										"loginkey": loginkey,
+									},
+									[
+										Object.entries,
+										x => x.filter(([key, value]) => (value !== null)),
+										x => x.map(([key, value]) => lib_string.coin("{{key}}={{value}}", {"key": key, "value": value})),
+										x => x.join("&")
+									]
+								),
+							}
+						),
+						{
+							"method": "POST",
+							"body": JSON.stringify(input),
+						}
+					)
+					.then
+					(
+						response => response.json()
+					)
+				);
+			}
+		}
+	}
+	
+	
+	/**
+	 */
+	export async function login
+	(
+		mobile : string,
+		pin : string
+	) : Promise<any>
+	{
+		return api_call
+		(
+			"login",
+			null,
+			{"mobile": mobile, "pin": pin}
+		);
+	}
+	
+	
+	/**
+	 */
+	export async function logout
+	(
+		loginkey : string
+	) : Promise<any>
+	{
+		return api_call
+		(
+			"logout",
+			loginkey,
+			{}
+		);
+	}
+	
+	
+	/**
+	 */
+	export async function open_lock
+	(
+		loginkey : string,
+		bike : string
+	) : Promise<any>
+	{
+		return api_call
+		(
+			"openLock",
+			loginkey,
+			{"bike": bike}
+		);
+	}
+	
+	
+	/**
+	 */
+	export async function rental_begin
+	(
+		loginkey : string,
+		bike : string
+	) : Promise<any>
+	{
+		return api_call
+		(
+			"rent",
+			loginkey,
+			{"bike": bike}
+		);
+	}
+	
+	
+	/**
+	 */
+	export async function rental_break
+	(
+		loginkey : string,
+		bike : string
+	) : Promise<any>
+	{
+		return api_call
+		(
+			"rentalBreak",
+			loginkey,
+			{"bike": bike}
+		);
+	}
+	
+	
+	/**
+	 */
+	export async function rental_end
+	(
+		loginkey : string,
+		bike : string
+	) : Promise<any>
+	{
+		return api_call
+		(
+			"return",
+			loginkey,
+			{"bike": bike}
+		);
+	}
+	
+}
+
diff --git a/source/logic/helpers/storage.ts b/source/logic/helpers/storage.ts
new file mode 100644
index 0000000..526c532
--- /dev/null
+++ b/source/logic/helpers/storage.ts
@@ -0,0 +1,39 @@
+
+namespace lib_storage
+{
+	
+	/**
+	 */
+	export function write
+	(
+		key : string,
+		value : any
+	) : void
+	{
+		window.localStorage.setItem(key, JSON.stringify(value));
+	}
+
+
+	/**
+	 */
+	export function read
+	(
+		key : string
+	) : any
+	{
+		return JSON.parse(window.localStorage.getItem(key));
+	}
+
+
+	/**
+	 */
+	export function kill
+	(
+		key : string
+	) : any
+	{
+		return window.localStorage.removeItem(key);
+	}
+	
+}
+
diff --git a/source/logic/helpers/string.ts b/source/logic/helpers/string.ts
new file mode 100644
index 0000000..f45637c
--- /dev/null
+++ b/source/logic/helpers/string.ts
@@ -0,0 +1,29 @@
+
+namespace lib_string
+{
+	
+	/**
+	 */
+	export function coin
+	(
+		template : string,
+		arguments_ : Record<string, string>
+	) : string
+	{
+		let result : string = template;
+		Object.entries(arguments_).forEach
+		(
+			([key, value]) =>
+			{
+				result = result.replace
+				(
+					new RegExp("{{" + key + "}}", "g"),
+					value
+				);
+			}
+		);
+		return result;
+	}
+	
+}
+
diff --git a/source/logic/main.ts b/source/logic/main.ts
new file mode 100644
index 0000000..397f141
--- /dev/null
+++ b/source/logic/main.ts
@@ -0,0 +1,179 @@
+/**
+ */
+async function do_rental
+(
+	rental_model : lib_mvc.type_model<mod_model.rental.type_subject>,
+	target_dom : HTMLElement
+) : Promise<{complex : lib_mvc.type_complex<mod_platform.rental.web.type_state>; element : HTMLElement;}>
+{
+	const platform : lib_mvc.type_model<mod_platform.rental.web.type_state> = lib_mvc.model_make<mod_platform.rental.web.type_state>
+	(
+		mod_platform.rental.web.make(rental_model)
+	);
+	
+	const rental_complex : lib_mvc.type_complex<mod_platform.rental.web.type_state> =
+	{
+		"model": platform,
+		"views":
+		[
+			mod_view.rental.console_.implementation_view(),
+			mod_view.rental.web.implementation_view(),
+		],
+		"controls":
+		[
+			mod_control.rental.implementation_control(),
+		],
+	};
+	await mod_platform.rental.web.setup(platform, target_dom);
+	await lib_mvc.complex_setup<mod_platform.rental.web.type_state>(rental_complex);
+	
+	return Promise.resolve<{complex : lib_mvc.type_complex<mod_platform.rental.web.type_state>; element : HTMLElement;}>
+	(
+		{
+			"complex": rental_complex,
+			"element": platform.state.element_dom,
+		}
+	);
+}
+
+
+/**
+ */
+async function do_app
+(
+	app_model : lib_mvc.type_model<mod_model.app.type_subject>,
+	target_dom : HTMLElement
+) : Promise<{complex : lib_mvc.type_complex<mod_platform.app.web.type_state>; element : HTMLElement;}>
+{
+	const platform : lib_mvc.type_model<mod_platform.app.web.type_state> = lib_mvc.model_make<mod_platform.app.web.type_state>
+	(
+		mod_platform.app.web.make(app_model)
+	);
+	const app_complex : lib_mvc.type_complex<mod_platform.app.web.type_state> =
+	{
+		"model": platform,
+		"views":
+		[
+			mod_view.app.console_.implementation_view(),
+			mod_view.app.web.implementation_view(),
+		],
+		"controls":
+		[
+			mod_control.app.implementation_control(),
+		],
+	};
+	await mod_platform.app.web.setup(platform, target_dom);
+	await lib_mvc.complex_setup<mod_platform.app.web.type_state>(app_complex);
+	
+	return Promise.resolve<{complex : lib_mvc.type_complex<mod_platform.app.web.type_state>; element : HTMLElement;}>
+	(
+		{
+			"complex": app_complex,
+			"element": platform.state.element_dom,
+		}
+	);
+}
+
+
+/**
+ */
+async function main
+(
+) : Promise<void>
+{
+	// consts
+	const styles : Record<string, mod_view.app.web.type_style> =
+	{
+		"default": {"sheet_name": "style/default.css", "force_language": null},
+		"strogg": {"sheet_name": "style/strogg.css", "force_language": "en"},
+	};
+	
+	// args
+	const url : URL = new URL(window.location.href);
+	let parameters : Record<string, string> = {};
+	url.searchParams.forEach((value, key) => {parameters[key] = value;});
+	const style_name : string = (
+		(! ("style" in parameters))
+		? "default"
+		: ((! (parameters["style"] in styles)) ? "default" : parameters["style"])
+	);
+	const language : (null | string) = (parameters["language"] ?? null);
+	
+	// vars
+	const style : mod_view.app.web.type_style = styles[style_name];
+	
+	// load conf
+	await lib_conf.load("conf.json");
+	
+	// setup localization
+	await lib_loc.setup
+	(
+		(
+			[
+				style.force_language,
+				language,
+				navigator.language,
+			]
+			.filter(x => (x !== null))
+		),
+		{
+			"resolve_path": (language => lib_string.coin("localization/{{language}}.json", {"language": language})),
+		}
+	);
+	
+	// setup nextbike api
+	lib_nextbike.setup(lib_conf.get("baseurl"), lib_conf.get("apikey"), {"testmode": true});
+	
+	// place stylesheet
+	{
+		let link_dom : HTMLElement = document.createElement("link");
+		link_dom.setAttribute("type", "text/css");
+		link_dom.setAttribute("rel", "stylesheet");
+		link_dom.setAttribute("href", style.sheet_name);
+		document.querySelector("head").appendChild(link_dom);
+	}
+	
+	// exec
+	const loginkey : (null | string) = lib_storage.read("nextbike_loginkey");
+	
+	let app_model : lib_mvc.type_model<mod_model.app.type_subject> = lib_mvc.model_make<mod_model.app.type_subject>(mod_model.app.inital(loginkey));
+	const app_deed = await do_app(app_model, document.querySelector("body"));
+	
+	// sub:rentals
+	{
+		lib_mvc.model_listen<mod_model.app.type_subject, any>
+		(
+			app_model,
+			async (event) =>
+			{
+				switch (event.type)
+				{
+					default:
+					{
+						// do nothing
+						break;
+					}
+					case "new_rental":
+					{
+						let rental_model : lib_mvc.type_model<mod_model.rental.type_subject> = event.data["rental_model"];
+						let rentals_dom : HTMLElement = app_deed.element.querySelector(".app_rentals");
+						const rental_deed = await do_rental(rental_model, rentals_dom);
+						return Promise.resolve<void>(undefined);
+						break;
+					}
+					case "end_rental":
+					{
+						let rentals_dom : HTMLElement = app_deed.element.querySelector(".app_rentals");
+						let rental_dom : HTMLElement = document.querySelector
+						(
+							lib_string.coin(".rental[rel=\"{{rel}}\"]", {"rel": event.data["id"]})
+						);
+						rentals_dom.removeChild(rental_dom);
+						return Promise.resolve<void>(undefined);
+						break;
+					}
+				}
+			}
+		);
+	}
+}
diff --git a/source/logic/model/app.ts b/source/logic/model/app.ts
new file mode 100644
index 0000000..42666f4
--- /dev/null
+++ b/source/logic/model/app.ts
@@ -0,0 +1,231 @@
+namespace mod_model.app
+{
+	
+	/**
+	 */
+	export enum enum_condition
+	{
+		logged_out,
+		logged_in,
+	}
+	
+	
+	/**
+	 */
+	export type type_subject =
+	{
+		condition : (null | enum_condition);
+		loginkey : (null | string);
+		rental_counter : int;
+		rentals :
+		{
+			offer : Record<mod_model.rental.type_id, lib_mvc.type_model<mod_model.rental.type_subject>>;
+			order : Array<mod_model.rental.type_id>;
+		};
+	};
+	
+	
+	/**
+	 */
+	export function inital
+	(
+		loginkey : (null | string)
+	) : type_subject
+	{
+		return {
+			"condition": ((loginkey === null) ? enum_condition.logged_out : enum_condition.logged_in),
+			"loginkey": loginkey,
+			"rental_counter": 0,
+			"rentals": {"offer": {}, "order": []},
+		};
+	}
+	
+	
+	/**
+	 */
+	export async function login
+	(
+		model : lib_mvc.type_model<type_subject>,
+		username : string,
+		password : string
+	) : Promise<void>
+	{
+		const result : any = await lib_nextbike.login(username, password);
+		model.state.loginkey = result["user"]["loginkey"];
+		model.state.condition = enum_condition.logged_in;
+		lib_storage.write("nextbike_loginkey", model.state.loginkey);
+		lib_mvc.model_notify<type_subject, {}>
+		(
+			model,
+			{
+				"type": "login",
+				"data": {}
+			}
+		);
+	}
+	
+	
+	/**
+	 * @todo end rentals?
+	 */
+	export async function logout
+	(
+		model : lib_mvc.type_model<type_subject>
+	) : Promise<void>
+	{
+		const result : any = await lib_nextbike.logout(model.state.loginkey);
+		lib_storage.kill("nextbike_loginkey");
+		model.state.condition = enum_condition.logged_out;
+		model.state.rentals = {"offer": {}, "order": []};
+		lib_mvc.model_notify<type_subject, {}>
+		(
+			model,
+			{
+				"type": "logout",
+				"data": {}
+			}
+		);
+	}
+	
+	
+	/**
+	 */
+	export async function prepare_rental
+	(
+		model : lib_mvc.type_model<type_subject>
+	) : Promise<void>
+	{
+		model.state.rental_counter += 1;
+		const rental_id : mod_model.rental.type_id = model.state.rental_counter.toFixed(0);
+		const rental_subject : mod_model.rental.type_subject = mod_model.rental.initial(rental_id);
+		const rental_model : lib_mvc.type_model<mod_model.rental.type_subject> = lib_mvc.model_make(rental_subject);
+		lib_mvc.model_listen<mod_model.rental.type_subject, any>
+		(
+			rental_model,
+			async (event) =>
+			{
+				switch (event.type)
+				{
+					default:
+					{
+						// do nothing
+						break;
+					}
+					case "start":
+					{
+						await start_rental(model, rental_subject.bike_name);
+						break;
+					}
+					case "pause":
+					{
+						await pause_rental(model, rental_subject.bike_name);
+						break;
+					}
+					case "open":
+					{
+						await open_lock(model, rental_subject.bike_name);
+						break;
+					}
+					case "end":
+					{
+						await end_rental(model, rental_subject.id);
+						break;
+					}
+				}
+			}
+		);
+		model.state.rentals.offer[rental_id] = lib_mvc.model_make<mod_model.rental.type_subject>(rental_subject);
+		model.state.rentals.order.push(rental_id);
+		lib_mvc.model_notify<type_subject, {rental_model : lib_mvc.type_model<mod_model.rental.type_subject>}>
+		(
+			model,
+			{
+				"type": "new_rental",
+				"data": {"rental_model": rental_model}
+			}
+		);
+	}
+	
+	
+	/**
+	 */
+	async function start_rental
+	(
+		model : lib_mvc.type_model<type_subject>,
+		bike_name : string
+	) : Promise<void>
+	{
+		const result : any = await lib_nextbike.rental_begin(model.state.loginkey, bike_name);
+		lib_mvc.model_notify<type_subject, {}>
+		(
+			model,
+			{
+				"type": "start_rental",
+				"data": {}
+			}
+		);
+	}
+	
+	
+	/**
+	 */
+	async function pause_rental
+	(
+		model : lib_mvc.type_model<type_subject>,
+		bike_name : string
+	) : Promise<void>
+	{
+		const result : any = await lib_nextbike.rental_break(model.state.loginkey, bike_name);
+		lib_mvc.model_notify<type_subject, {}>
+		(
+			model,
+			{
+				"type": "pause_rental",
+				"data": {}
+			}
+		);
+	}
+	
+	
+	/**
+	 */
+	async function open_lock
+	(
+		model : lib_mvc.type_model<type_subject>,
+		bike_name : string
+	) : Promise<void>
+	{
+		const result : any = await lib_nextbike.open_lock(model.state.loginkey, bike_name);
+		lib_mvc.model_notify<type_subject, {}>
+		(
+			model,
+			{
+				"type": "open_lock",
+				"data": {}
+			}
+		);
+	}
+	
+	
+	/**
+	 */
+	function end_rental
+	(
+		model : lib_mvc.type_model<type_subject>,
+		rental_id : mod_model.rental.type_id
+	) : Promise<void>
+	{
+		lib_mvc.model_notify<type_subject, {}>
+		(
+			model,
+			{
+				"type": "end_rental",
+				"data": {"id": rental_id}
+			}
+		);
+		model.state.rentals.order = model.state.rentals.order.filter(x => (x !== rental_id));
+		delete model.state.rentals.offer[rental_id];
+		return Promise.resolve<void>(undefined);
+	}
+	
+}
diff --git a/source/logic/model/rental.ts b/source/logic/model/rental.ts
new file mode 100644
index 0000000..11c2360
--- /dev/null
+++ b/source/logic/model/rental.ts
@@ -0,0 +1,120 @@
+namespace mod_model.rental
+{
+	
+	/**
+	 */
+	export type type_id = string;
+	
+	
+	/**
+	 */
+	export enum enum_condition
+	{
+		prior,
+		running,
+		paused,
+	}
+	
+	
+	/**
+	 */
+	export type type_subject =
+	{
+		id : type_id;
+		condition : enum_condition;
+		bike_name : (null | string);
+	};
+	
+	
+	/**
+	 */
+	export function initial
+	(
+		id : type_id
+	) : type_subject
+	{
+		return {
+			"id": id,
+			"condition": enum_condition.prior,
+			"bike_name": null,
+		};
+	}
+	
+	
+	/**
+	 */
+	export async function start
+	(
+		model : lib_mvc.type_model<type_subject>,
+		bike_name : string
+	) : Promise<void>
+	{
+		model.state.condition = enum_condition.running;
+		model.state.bike_name = bike_name;
+		await lib_mvc.model_notify<type_subject, {id : type_id}>
+		(
+			model,
+			{
+				"type": "start",
+				"data": {"id": model.state.id}
+			}
+		);
+	}
+	
+	
+	/**
+	 */
+	export async function pause
+	(
+		model : lib_mvc.type_model<type_subject>
+	) : Promise<void>
+	{
+		model.state.condition = enum_condition.paused;
+		await lib_mvc.model_notify<type_subject, {id : type_id}>
+		(
+			model,
+			{
+				"type": "pause",
+				"data": {"id": model.state.id}
+			}
+		);
+	}
+	
+	
+	/**
+	 */
+	export async function open
+	(
+		model : lib_mvc.type_model<type_subject>
+	) : Promise<void>
+	{
+		model.state.condition = enum_condition.running;
+		await lib_mvc.model_notify<type_subject, {id : type_id}>
+		(
+			model,
+			{
+				"type": "open",
+				"data": {"id": model.state.id}
+			}
+		);
+	}
+	
+	
+	/**
+	 */
+	export async function end
+	(
+		model : lib_mvc.type_model<type_subject>
+	) : Promise<void>
+	{
+		await lib_mvc.model_notify<type_subject, {id : type_id}>
+		(
+			model,
+			{
+				"type": "end",
+				"data": {"id": model.state.id}
+			}
+		);
+	}
+	
+}
diff --git a/source/logic/platform/web/app.ts b/source/logic/platform/web/app.ts
new file mode 100644
index 0000000..1b06d09
--- /dev/null
+++ b/source/logic/platform/web/app.ts
@@ -0,0 +1,66 @@
+namespace mod_platform.app.web
+{
+	
+	/**
+	 */
+	export type type_state =
+	{
+		model : lib_mvc.type_model<mod_model.app.type_subject>;
+		element_dom : (null | HTMLElement);
+	}
+	
+	
+	/**
+	 */
+	export function make
+	(
+		model : lib_mvc.type_model<mod_model.app.type_subject>
+	) : type_state
+	{
+		return {
+			"model": model,
+			"element_dom": null,
+		};
+	}
+	
+	
+	/**
+	 */
+	export function setup
+	(
+		platform : lib_mvc.type_model<type_state>,
+		target_dom : HTMLElement
+	) : Promise<void>
+	{
+		let fragment : DocumentFragment = lib_dom.request("app");
+		let app_dom : HTMLElement = fragment.querySelector(".app");
+		target_dom.appendChild(fragment);
+		
+		app_dom.classList.add("empty");
+		
+		platform.state.element_dom = app_dom;
+		
+		// propagate events from the model
+		lib_mvc.model_listen<mod_model.app.type_subject, any>
+		(
+			platform.state.model,
+			(event) =>
+			{
+				return lib_mvc.model_notify<type_state, any>(platform, event);
+			}
+		);
+		
+		return Promise.resolve<void>(undefined);
+	}
+
+	
+	// imitate interface of model
+	// export function login(platform : lib_mvc.type_model<type_state>, username : string, password : string) : Promise<void> {return mod_model.app.login(platform.state.model, username, password);}
+	// export function logout(platform : lib_mvc.type_model<type_state>) : Promise<void> {return mod_model.app.logout(platform.state.model);}
+	// export function prepare_rental(platform : lib_mvc.type_model<type_state>) : Promise<void> {return mod_model.app.prepare_rental(platform.state.model);}
+	// function start_rental(platform : lib_mvc.type_model<type_state>, bike_name : string) : Promise<void> {return mod_model.app.start_rental(platform.model, bike_name);}
+	// function pause_rental(platform : lib_mvc.type_model<type_state>, bike_name : string) : Promise<void> {return mod_model.app.pause_rental(platform.model, bike_name);}
+	// function open_lock(platform : lib_mvc.type_model<type_state>, bike_name : string) : Promise<void> {return mod_model.app.open_lock(platform.model, bike_name);}
+	// function end_rental(platform : lib_mvc.type_model<type_state>, rental_id : mod_model.rental.type_id) : Promise<void> {return mod_model.app.end_rental(platform.model, rental_id);}
+	
+}
diff --git a/source/logic/platform/web/rental.ts b/source/logic/platform/web/rental.ts
new file mode 100644
index 0000000..ec7c429
--- /dev/null
+++ b/source/logic/platform/web/rental.ts
@@ -0,0 +1,54 @@
+namespace mod_platform.rental.web
+{
+	
+	/**
+	 */
+	export type type_state =
+	{
+		model : lib_mvc.type_model<mod_model.rental.type_subject>;
+		element_dom : (null | HTMLElement);
+	}
+	
+	
+	/**
+	 */
+	export function make
+	(
+		model : lib_mvc.type_model<mod_model.rental.type_subject>
+	) : type_state
+	{
+		return {
+			"model": model,
+			"element_dom": null,
+		};
+	}
+	
+	
+	/**
+	 */
+	export function setup
+	(
+		platform : lib_mvc.type_model<type_state>,
+		target_dom : HTMLElement
+	) : Promise<void>
+	{
+		let fragment : DocumentFragment = lib_dom.request("rental");
+		let rental_dom : HTMLElement = fragment.querySelector(".rental");
+		target_dom.appendChild(fragment);
+		
+		platform.state.element_dom = rental_dom;
+		
+		// propagate events from the model
+		lib_mvc.model_listen<mod_model.rental.type_subject, any>
+		(
+			platform.state.model,
+			(event) =>
+			{
+				return lib_mvc.model_notify<type_state, any>(platform, event);
+			}
+		);
+		
+		return Promise.resolve<void>(undefined);
+	}
+	
+}
diff --git a/source/logic/view/console/app.ts b/source/logic/view/console/app.ts
new file mode 100644
index 0000000..a3d9283
--- /dev/null
+++ b/source/logic/view/console/app.ts
@@ -0,0 +1,40 @@
+namespace mod_view.app.console_
+{
+	
+	/**
+	 */
+	export function setup
+	(
+		platform : lib_mvc.type_model<mod_platform.app.web.type_state>,
+	) : Promise<void>
+	{
+		return Promise.resolve<void>(undefined);
+	}
+	
+	
+	/**
+	 */
+	function update
+	(
+		platform : lib_mvc.type_model<mod_platform.app.web.type_state>,
+		event : lib_mvc.type_event<any>
+	) : Promise<void>
+	{
+		console.info("app", event.type, platform.state.model, event.data);
+		return Promise.resolve<void>(undefined);
+	}
+	
+	
+	/**
+	 */
+	export function implementation_view
+	(
+	) : lib_mvc.type_view<mod_platform.app.web.type_state>
+	{
+		return {
+			"setup": (model) => setup(model),
+			"update": (model, event) => update(model, event),
+		};
+	}
+	
+}
diff --git a/source/logic/view/console/rental.ts b/source/logic/view/console/rental.ts
new file mode 100644
index 0000000..15a89d2
--- /dev/null
+++ b/source/logic/view/console/rental.ts
@@ -0,0 +1,40 @@
+namespace mod_view.rental.console_
+{
+	
+	/**
+	 */
+	export function setup
+	(
+		platform : lib_mvc.type_model<mod_platform.rental.web.type_state>
+	) : Promise<void>
+	{
+		return Promise.resolve<void>(undefined);
+	}
+	
+	
+	/**
+	 */
+	function update
+	(
+		platform : lib_mvc.type_model<mod_platform.rental.web.type_state>,
+		event : lib_mvc.type_event<any>
+	) : Promise<void>
+	{
+		console.info("rental", event.type, platform.state.model, event.data);
+		return Promise.resolve<void>(undefined);
+	}
+	
+	
+	/**
+	 */
+	export function implementation_view
+	(
+	) : lib_mvc.type_view<mod_platform.rental.web.type_state>
+	{
+		return {
+			"setup": (model) => setup(model),
+			"update": (model, event) => update(model, event),
+		};
+	}
+	
+}
diff --git a/source/logic/view/web/app.ts b/source/logic/view/web/app.ts
new file mode 100644
index 0000000..831950b
--- /dev/null
+++ b/source/logic/view/web/app.ts
@@ -0,0 +1,123 @@
+namespace mod_view.app.web
+{
+	
+	/**
+	 */
+	export type type_style =
+	{
+		sheet_name : string;
+		force_language : (null | string);
+	};
+	
+	
+	/**
+	 */
+	export type type_state =
+	{
+		context_dom : (null | HTMLElement);
+	};
+	
+	
+	/**
+	 */
+	function set_condition
+	(
+		state : type_state,
+		condition : mod_model.app.enum_condition
+	) : void
+	{
+		state.context_dom.classList.toggle("empty", false);
+		state.context_dom.classList.toggle("logged_in", (condition === mod_model.app.enum_condition.logged_in));
+		state.context_dom.classList.toggle("logged_out", (condition === mod_model.app.enum_condition.logged_out));
+	}
+	
+	
+	/**
+	 */
+	export function make
+	(
+	) : type_state
+	{
+		return {
+			"context_dom": null,
+		};
+	}
+	
+	
+	/**
+	 */
+	export function setup
+	(
+		state : type_state,
+		platform : lib_mvc.type_model<mod_platform.app.web.type_state>,
+	) : Promise<void>
+	{
+		let context_dom : HTMLElement = platform.state.element_dom;
+		state.context_dom = context_dom;
+		// translate stuff
+		{
+			lib_loc.translate_item(".app_username > input", "username", {"context": context_dom, "kind": "attribute", "parameters": {"key": "placeholder"}});
+			lib_loc.translate_item(".app_password > input", "password", {"context": context_dom, "kind": "attribute", "parameters": {"key": "placeholder"}});
+			lib_loc.translate_item(".app_login > button", "login", {"context": context_dom});
+			lib_loc.translate_item(".app_logout > button", "logout", {"context": context_dom});
+			lib_loc.translate_item(".app_rent > button", "rent", {"context": context_dom});
+		}
+		// list rentals
+		{
+			/*
+			let rentals_dom : HTMLElement = document.querySelector("#rentals");
+			rentals_dom.innerHTML = "";
+			model.rentals.order.forEach
+			(
+				(rental_id) =>
+				{
+				}
+			);
+			 */
+		}
+		set_condition(state, platform.state.model.state.condition);
+		return Promise.resolve<void>(undefined);
+	}
+	
+	
+	/**
+	 */
+	function update
+	(
+		state : type_state,
+		platform : lib_mvc.type_model<mod_platform.app.web.type_state>,
+		event : lib_mvc.type_event<any>
+	) : Promise<void>
+	{
+		switch (event.type)
+		{
+			default:
+			{
+				// do nothing
+				break;
+			}
+			case "login":
+			case "logout":
+			{
+				set_condition(state, platform.state.model.state.condition);
+				break;
+			}
+		}
+		return Promise.resolve<void>(undefined);
+	}
+	
+	
+	/**
+	 */
+	export function implementation_view
+	(
+	) : lib_mvc.type_view<mod_platform.app.web.type_state>
+	{
+		let state : type_state = make();
+		return {
+			"setup": (model) => setup(state, model),
+			"update": (model, event) => update(state, model, event),
+		};
+	}
+	
+}
diff --git a/source/logic/view/web/rental.ts b/source/logic/view/web/rental.ts
new file mode 100644
index 0000000..6b44f57
--- /dev/null
+++ b/source/logic/view/web/rental.ts
@@ -0,0 +1,151 @@
+namespace mod_view.rental.web
+{
+	
+	/**
+	 */
+	export function setup
+	(
+		platform : lib_mvc.type_model<mod_platform.rental.web.type_state>
+	) : Promise<void>
+	{
+		let context_dom : HTMLElement = platform.state.element_dom;
+		// container
+		{
+			context_dom.setAttribute("rel", platform.state.model.state.id);
+			context_dom.classList.add
+			(
+				(
+					(rental_state) =>
+					{
+						switch (rental_state)
+						{
+							case mod_model.rental.enum_condition.prior: return "prior";
+							case mod_model.rental.enum_condition.running: return "running";
+							case mod_model.rental.enum_condition.paused: return "paused";
+						}
+					}
+				) (platform.state.model.state.condition),
+			);
+		}
+		// bike
+		{
+			let bike_dom : HTMLInputElement = (context_dom.querySelector(".rental_bike > input") as HTMLInputElement)
+			lib_loc.translate_item
+			(
+				".rental_bike > input",
+				"bikename",
+				{
+					"context": context_dom,
+					"kind": "attribute",
+					"parameters": {"key": "placeholder"},
+				}
+			);
+			bike_dom.value = (platform.state.model.state.bike_name ?? "");
+			const disabled : boolean = (
+				(
+					(rental_state) =>
+					{
+						switch (rental_state)
+						{
+							case mod_model.rental.enum_condition.prior: return false;
+							case mod_model.rental.enum_condition.running: return true;
+							case mod_model.rental.enum_condition.paused: return true;
+						}
+					}
+				) (platform.state.model.state.condition)
+			);
+			if (! disabled)
+			{
+				// do nothing
+			}
+			else
+			{
+				bike_dom.setAttribute("disabled", "disabled");
+			}
+		}
+		// start
+		{
+			lib_loc.translate_item(".rental_start > button", "start", {"context": context_dom});
+		}
+		// open
+		{
+			lib_loc.translate_item(".rental_open > button", "open", {"context": context_dom});
+		}
+		// pause
+		{
+			lib_loc.translate_item(".rental_pause > button", "pause", {"context": context_dom});
+		}
+		// finish
+		{
+			lib_loc.translate_item(".rental_finish > button", "finish", {"context": context_dom});
+		}
+		return Promise.resolve<void>(undefined);
+	}
+	
+	
+	/**
+	 */
+	function update
+	(
+		platform : lib_mvc.type_model<mod_platform.rental.web.type_state>,
+		event : lib_mvc.type_event<any>
+	) : Promise<void>
+	{
+		switch (event.type)
+		{
+			default:
+			{
+				// do nothing
+				break;
+			}
+			case "start":
+			{
+				let container_dom : HTMLElement = document.querySelector
+				(
+					lib_string.coin(".rental[rel=\"{{rel}}\"]", {"rel": event.data["id"]})
+				);
+				container_dom.classList.remove("prior");
+				container_dom.classList.remove("paused");
+				container_dom.classList.add("running");
+				break;
+			}
+			case "pause":
+			{
+				let container_dom : HTMLElement = document.querySelector
+				(
+					lib_string.coin(".rental[rel=\"{{rel}}\"]", {"rel": event.data["id"]})
+				);
+				container_dom.classList.remove("prior");
+				container_dom.classList.remove("running");
+				container_dom.classList.add("paused");
+				break;
+			}
+			case "open":
+			{
+				let container_dom : HTMLElement = document.querySelector
+				(
+					lib_string.coin(".rental[rel=\"{{rel}}\"]", {"rel": event.data["id"]})
+				);
+				container_dom.classList.remove("prior");
+				container_dom.classList.remove("paused");
+				container_dom.classList.add("running");
+				break;
+			}
+		}
+		return Promise.resolve<void>(undefined);
+	}
+	
+	
+	/**
+	 */
+	export function implementation_view
+	(
+	) : lib_mvc.type_view<mod_platform.rental.web.type_state>
+	{
+		return {
+			"setup": (model) => setup(model),
+			"update": (model, event) => update(model, event),
+		};
+	}
+	
+}
diff --git a/source/media/logo.svg b/source/media/logo.svg
new file mode 100644
index 0000000..77b1564
--- /dev/null
+++ b/source/media/logo.svg
@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg:svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   height="56.408779"
+   width="100.46931"
+   sodipodi:docname="Nextbike_Logo.svg"
+   id="svg14"
+   enable-background="new 0 0 392.2 56.5"
+   viewBox="0 0 100.4693 56.408779"
+   version="1.1">
+  <svg:metadata
+     id="metadata20">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </svg:metadata>
+  <svg:defs
+     id="defs18" />
+  <sodipodi:namedview
+     inkscape:current-layer="svg14"
+     inkscape:window-maximized="1"
+     inkscape:window-y="0"
+     inkscape:window-x="0"
+     inkscape:cy="9.7905717"
+     inkscape:cx="58.217152"
+     inkscape:zoom="5.8898519"
+     fit-margin-bottom="0"
+     fit-margin-right="0"
+     fit-margin-left="0"
+     fit-margin-top="0"
+     showgrid="false"
+     id="namedview16"
+     inkscape:window-height="1056"
+     inkscape:window-width="1920"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0"
+     guidetolerance="10"
+     gridtolerance="10"
+     objecttolerance="10"
+     borderopacity="1"
+     bordercolor="#666666"
+     pagecolor="#ffffff" />
+  <svg:g
+     transform="translate(-291.73069,-0.09122245)"
+     id="g12"
+     fill="#0154a6">
+    <svg:path
+       id="path10"
+       d="m 301.2,15.8 c 0.7,1.7 -1.1,1.4 0.1,4.1 0.8,1.7 5.1,9 19.6,11.8 1.4,0.3 9.2,1.2 14.8,-2 1.9,-1.1 -2.6,-1 -4.9,-9.6 C 330,17 329.8,12.4 324.9,8.2 319.8,3.8 311.8,1.8 303.7,2 c -3.9,0.1 -11.3,0.6 -11.9,1.6 -0.7,1.4 4.1,3.2 5.5,4.9 1.1,1.3 -0.4,2 -0.1,3 0.5,2 3.7,3.6 4,4.3 z m 71.1,0.3 c -11.2,0 -19.9,9.1 -19.9,20.3 0,11.1 8.7,20 19.9,20 11.3,0 19.9,-9 19.9,-20 0,-11.2 -8.6,-20.3 -19.9,-20.3 z m 0,34.5 C 365,50.6 359,44.2 359,36.4 c 0,-8 6,-14.5 13.3,-14.5 7.4,0 13.4,6.5 13.4,14.5 0,7.9 -6,14.2 -13.4,14.2 z M 358.7,16.7 c 4.6,-2.4 11.2,-3.9 11.2,-8.6 0,-4 -5.2,-6.8 -7.4,-7.7 -1.7,-0.7 -3.6,-0.2 -4.3,1.4 -0.7,1.4 0.4,3.1 2.3,3.8 2,0.7 2.9,1.7 2.6,2.5 -0.3,0.9 -2.7,1.2 -7.1,3.4 -2.3,1.1 -4.3,2.9 -6.2,5 -2,2.1 -4,5.9 -5.1,8.2 -4.2,8 -12.2,10.4 -13.5,10.6 v 1.2 c 0,7.8 -6,14.2 -13.4,14.2 -7.3,0 -13.3,-6.4 -13.3,-14.2 0,-2.4 0.6,-4.7 1.5,-6.7 -1.4,-1 -4,-3.3 -5.3,-4.7 -1.2,2 -2.9,6.1 -2.9,11.4 0,11.1 8.7,20 19.9,20 10,0 17.8,-6.9 19.6,-16.1 7.3,-3 10.3,-7.4 12.5,-12 1.9,-4.3 4.3,-9.3 8.9,-11.7 z" />
+  </svg:g>
+  <link
+     id="dark-mode-general-link"
+     rel="stylesheet"
+     type="text/css" />
+  <link
+     id="dark-mode-custom-link"
+     rel="stylesheet"
+     type="text/css" />
+  <style
+     id="dark-mode-custom-style"
+     type="text/css" />
+</svg:svg>
diff --git a/source/structure/index.html b/source/structure/index.html
new file mode 100644
index 0000000..ac3fa3b
--- /dev/null
+++ b/source/structure/index.html
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<html>
+	<template id="app">
+		<div class="app">
+			<div class="formfield app_username">
+				<input type="text" placeholder="Telefon-Nummer"/>
+			</div>
+			<div class="formfield app_password">
+				<input type="password" placeholder="Passwort"/>
+			</div>
+			<div class="formfield app_login">
+				<button></button>
+			</div>
+			<ol class="app_rentals">
+			</ol>
+			<div class="formfield app_rent">
+				<button></button>
+			</div>
+			<div class="formfield app_logout">
+				<button></button>
+			</div>
+			<div class="app_logo">
+				<img src="logo.svg"/>
+			</div>
+		</div>
+	</template>
+	<template id="rental">
+		<li class="rental">
+			<div class="formfield rental_bike">
+				<input type="text" placeholder="Rad-Nummer" pattern="[0-9]{5,6}"/>
+			</div>
+			<div class="formfield rental_start">
+				<button></button>
+			</div>
+			<div class="formfield rental_open">
+				<button></button>
+			</div>
+			<div class="formfield rental_pause">
+				<button></button>
+			</div>
+			<div class="formfield rental_finish">
+				<button></button>
+			</div>
+			<hr/>
+		</li>
+	</template>
+	<head>
+		<meta charset="utf-8"/>
+		<meta name="viewport" content="width=device-width, initial-scale=1.0">
+		<script type="text/javascript" src="logic.js"></script>
+		<script type="text/javascript">document.addEventListener("DOMContentLoaded", function (event) {main();})</script>
+		<link rel="stylesheet" type="text/css" href="style/base.css"/>
+		<title>ryde</title>
+	</head>
+	<body>
+	</body>
+</html>
diff --git a/source/style/base.less b/source/style/base.less
new file mode 100644
index 0000000..e33afa8
--- /dev/null
+++ b/source/style/base.less
@@ -0,0 +1,154 @@
+@font-face
+{
+    font-family: 'strogg';
+    src: url('../fonts/strogg.ttf') format('ttf'), url('../fonts/strogg.woff') format('woff'), url('../fonts/strogg.woff2') format('woff2');
+}
+
+html
+{
+	font-size: 2.5em;
+	padding: 0;
+	margin: 0;
+}
+
+body
+{
+	margin: 8px;
+	padding: 8px;
+}
+
+.formfield
+{
+	margin-bottom: 4px;
+	
+	& > input,
+	& > button
+	{
+		margin: 8px;
+		padding: 8px;
+		width: 93.75%;
+		min-height: 64px;
+		font-weight: bold;
+		font-size: 24px;
+	}	
+	
+	& > button
+	{
+		cursor: pointer;
+	}
+	
+	& > input
+	{
+		border: none;
+	}
+	
+	& > button
+	{
+		border: none;
+	}
+	
+	& > label
+	{
+		display: block;
+		font-weight: bold;
+		font-size: 0.75em;
+	}
+}
+
+.app
+{
+	&.empty
+	{
+		& > .app_username {display: none;}
+		& > .app_password {display: none;}
+		& > .app_bikename {display: none;}
+		& > .app_login {display: none;}
+		& > .app_logout {display: none;}
+		& > .app_rentals {display: none;}
+		& > .app_rent {display: none;}
+		& > .app_pause {display: none;}
+		& > .app_finish {display: none;}
+		& > .app_open {display: none;}
+	}
+	
+	&.logged_out
+	{
+		& > .app_username {}
+		& > .app_password {}
+		& > .app_bikename {display: none;}
+		& > .app_login {}
+		& > .app_logout {display: none;}
+		& > .app_rentals {display: none;}
+		& > .app_rent {display: none;}
+		& > .app_pause {display: none;}
+		& > .app_finish {display: none;}
+		& > .app_open {display: none;}
+	}
+	
+	&.logged_in
+	{
+		& > .app_username {display: none;}
+		& > .app_password {display: none;}
+		& > .app_bikename {}
+		& > .app_login {display: none;}
+		& > .app_logout {}
+		& > .app_rentals {}
+		& > .app_rent {}
+		& > .app_pause {display: none;}
+		& > .app_finish {display: none;}
+		& > .app_open {display: none;}
+	}
+}
+
+.app_logo
+{
+	width: 60%;
+	margin: 20%;
+	filter: saturate(0);
+	
+	& > img
+	{
+		width: 100%;
+	}
+}
+
+.app_rentals
+{
+	margin: 0;
+	padding: 0;
+	
+	& > li
+	{
+		list-style-type: none;
+	}
+}
+
+.rental
+{
+	&.prior
+	{
+		& > .rental_bike {}
+		& > .rental_start {}
+		& > .rental_pause {display: none;}
+		& > .rental_finish {display: none;}
+		& > .rental_open {display: none;}
+	}
+	
+	&.running
+	{
+		& > .rental_bike {}
+		& > .rental_start {display: none;}
+		& > .rental_pause {}
+		& > .rental_finish {}
+		& > .rental_open {}
+	}
+	
+	&.paused
+	{
+		& > .rental_bike {}
+		& > .rental_start {display: none;}
+		& > .rental_pause {display: none;}
+		& > .rental_finish {display: none;}
+		& > .rental_open {}
+	}
+}
diff --git a/source/style/default.less b/source/style/default.less
new file mode 100644
index 0000000..ae816da
--- /dev/null
+++ b/source/style/default.less
@@ -0,0 +1,40 @@
+@hue: 150;
+
+html
+{
+	background-color: hsv(@hue, 0%, 0%);
+	color: hsv(@hue, 0%, 100%);
+	
+	font-family: monospace;
+}
+
+body
+{
+	/*
+	background-color: hsv(@hue, 0%, 25%);
+	color: hsv(@hue, 0%, 75%);
+	 */
+}
+
+.formfield
+{
+	& > input,
+	& > button
+	{
+		font-family: monospace;
+		text-transform: uppercase;
+	}
+	
+	& > input
+	{
+		background-color: hsv(@hue, 0%, 75%);
+		color: hsv(@hue, 0%, 0%);
+	}
+	
+	& > button
+	{
+		background-color: hsv(@hue, 75%, 50%);
+		color: hsv(@hue, 0%, 100%);
+	}
+}
+
diff --git a/source/style/strogg.less b/source/style/strogg.less
new file mode 100644
index 0000000..299fe61
--- /dev/null
+++ b/source/style/strogg.less
@@ -0,0 +1,40 @@
+@hue: 0;
+
+html
+{
+	background-color: hsv(@hue, 0%, 0%);
+	color: hsv(@hue, 0%, 100%);
+	
+	font-family: strogg;
+}
+
+body
+{
+	/*
+	background-color: hsv(@hue, 0%, 25%);
+	color: hsv(@hue, 0%, 75%);
+	 */
+}
+
+.formfield
+{
+	& > input,
+	& > button
+	{
+		font-family: strogg;
+		text-transform: lowercase;
+	}	
+	
+	& > input
+	{
+		background-color: hsv(@hue, 0%, 75%);
+		color: hsv(@hue, 0%, 0%);
+	}
+	
+	& > button
+	{
+		background-color: hsv(@hue, 75%, 50%);
+		color: hsv(@hue, 0%, 100%);
+	}
+}
+
diff --git a/tools/build b/tools/build
new file mode 100755
index 0000000..773ec81
--- /dev/null
+++ b/tools/build
@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+
+make --file=tools/makefile
+
diff --git a/tools/deploy b/tools/deploy
new file mode 100755
index 0000000..22bdbec
--- /dev/null
+++ b/tools/deploy
@@ -0,0 +1,11 @@
+#!/usr/bin/env sh
+
+if [ $# -ge 1 ] ; then target=$1 && shift ; else target="pv-mehl:~/websites/folksprak.org/htdocs/ryde" ; fi
+
+rsync \
+	--recursive \
+	--update \
+	--verbose \
+	build/ \
+	${target}
+
diff --git a/tools/makefile b/tools/makefile
new file mode 100644
index 0000000..d368d7b
--- /dev/null
+++ b/tools/makefile
@@ -0,0 +1,146 @@
+cmd_mkdir := mkdir -p
+cmd_log := echo "--"
+cmd_tsc := tsc --target es2020 --lib es2020,dom 
+cmd_copy := cp --recursive --update
+cmd_lessc := lessc
+
+
+all: \
+	structure \
+	logic \
+	style \
+	conf \
+	media \
+	localization \
+	fonts
+.PHONY: all
+
+structure: structure-log structure-exe
+.PHONY: structure
+
+structure-exe: \
+	build/index.html
+.PHONY: structure-exe
+
+structure-log:
+	@ ${cmd_log} "structure …"
+.PHONY: structure-log
+
+build/index.html: source/structure/index.html
+	@ ${cmd_mkdir} build
+	@ ${cmd_copy} $^ $@
+
+logic: logic-log logic-exe
+.PHONY: logic
+
+logic-log:
+	@ ${cmd_log} "logic …"
+.PHONY: logic-log
+
+logic-exe: \
+	build/logic.js
+.PHONY: logic-exe
+
+build/logic.js: \
+	source/logic/base.ts \
+	source/logic/helpers/call.ts \
+	source/logic/helpers/string.ts \
+	source/logic/helpers/storage.ts \
+	source/logic/helpers/dom.ts \
+	source/logic/helpers/mvc.ts \
+	source/logic/helpers/loc.ts \
+	source/logic/helpers/conf.ts \
+	source/logic/helpers/nextbike.ts \
+	source/logic/model/rental.ts \
+	source/logic/model/app.ts \
+	source/logic/platform/web/app.ts \
+	source/logic/platform/web/rental.ts \
+	source/logic/view/console/rental.ts \
+	source/logic/view/console/app.ts \
+	source/logic/view/web/rental.ts \
+	source/logic/view/web/app.ts \
+	source/logic/control/rental.ts \
+	source/logic/control/app.ts \
+	source/logic/main.ts
+	@ ${cmd_mkdir} build
+	@ ${cmd_tsc} $^ --outFile $@
+
+style: style-log style-exe
+.PHONY: style
+
+style-log:
+	@ ${cmd_log} "style …"
+.PHONY: style-log
+
+style-exe: \
+	build/style/base.css \
+	build/style/default.css \
+	build/style/strogg.css
+.PHONY: style-exe
+
+build/style/base.css: source/style/base.less
+	@ ${cmd_mkdir} $(dir $@)
+	@ ${cmd_lessc} $^ > $@
+
+build/style/default.css: source/style/default.less
+	@ ${cmd_mkdir} $(dir $@)
+	@ ${cmd_lessc} $^ > $@
+
+build/style/strogg.css: source/style/strogg.less
+	@ ${cmd_mkdir} $(dir $@)
+	@ ${cmd_lessc} $^ > $@
+
+conf: conf-log conf-exe
+.PHONY: conf
+
+conf-log:
+	@ ${cmd_log} "conf …"
+.PHONY: conf-log
+
+conf-exe: \
+	build/conf.json
+.PHONY: conf-exe
+
+build/conf.json: source/data/conf.json
+	@ ${cmd_mkdir} $(dir $@)
+	@ ${cmd_copy} $^ $@
+
+media: media-log media-exe
+.PHONY: media
+
+media-log:
+	@ ${cmd_log} "media …"
+.PHONY: media-log
+
+media-exe: \
+	build/logo.svg
+.PHONY: media-exe
+
+build/logo.svg: source/media/logo.svg
+	@ ${cmd_mkdir} $(dir $@)
+	@ ${cmd_copy} $^ $@
+
+localization: localization-log localization-exe
+.PHONY: localization
+
+localization-log:
+	@ ${cmd_log} "localization …"
+.PHONY: localization-log
+
+localization-exe: 
+	@ ${cmd_mkdir} build/localization
+	@ ${cmd_copy} source/data/localization/* build/localization/
+.PHONY: localization-exe
+
+fonts: fonts-log fonts-exe
+.PHONY: fonts
+
+fonts-log:
+	@ ${cmd_log} "fonts …"
+.PHONY: fonts-log
+
+fonts-exe:
+	@ ${cmd_mkdir} build/fonts
+	@ ${cmd_copy} source/fonts/* build/fonts/
+.PHONY: fonts-exe
+
diff --git a/tools/run b/tools/run
new file mode 100755
index 0000000..329f1f5
--- /dev/null
+++ b/tools/run
@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+
+web-server build 8888
+