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import { compose } from './compose.ts'import type { Context } from './context.ts'import { HonoContext } from './context.ts'import { extendRequestPrototype } from './request.ts'import type { Router } from './router.ts'import { METHODS } from './router.ts'import { METHOD_NAME_ALL, METHOD_NAME_ALL_LOWERCASE } from './router.ts'import { RegExpRouter } from './router/reg-exp-router/index.ts'import { SmartRouter } from './router/smart-router/index.ts'import { StaticRouter } from './router/static-router/index.ts'import { TrieRouter } from './router/trie-router/index.ts'import { getPathFromURL, mergePath } from './utils/url.ts'
export interface ContextVariableMap {}
export type Bindings = Record<string, any> // For Cloudflare Workersexport type Variables = Record<string, any> // For c.set/c.get functionsexport type Environment = {  Bindings: Bindings  Variables: Variables}
export type ValidatedData = Record<string, any> // For validated data
export type Handler<  RequestParamKeyType extends string = string,  E extends Partial<Environment> = Environment,  D extends ValidatedData = ValidatedData> = (  c: Context<RequestParamKeyType, E, D>,  next: Next) => Response | Promise<Response> | Promise<void> | Promise<Response | undefined>
export type MiddlewareHandler = <E extends Partial<Environment> = Environment>(  c: Context<string, E>,  next: Next) => Promise<void> | Promise<Response | undefined>
export type NotFoundHandler<E extends Partial<Environment> = Environment> = (  c: Context<string, E>) => Response | Promise<Response>
export type ErrorHandler<E extends Partial<Environment> = Environment> = (  err: Error,  c: Context<string, E>) => Response
export type Next = () => Promise<void>
// eslint-disable-next-line @typescript-eslint/no-unused-varstype ParamKeyName<NameWithPattern> = NameWithPattern extends `${infer Name}{${infer _Pattern}`  ? Name  : NameWithPattern
type ParamKey<Component> = Component extends `:${infer NameWithPattern}`  ? ParamKeyName<NameWithPattern>  : never
type ParamKeys<Path> = Path extends `${infer Component}/${infer Rest}`  ? ParamKey<Component> | ParamKeys<Rest>  : ParamKey<Path>
interface HandlerInterface<T extends string, E extends Partial<Environment>, U = Hono<E, T>> {  // app.get(handler...)  <Path extends string, Data extends ValidatedData>(    ...handlers: Handler<ParamKeys<Path> extends never ? string : ParamKeys<Path>, E, Data>[]  ): U  (...handlers: Handler<string, E>[]): U  // app.get('/', handler, handler...)  <Path extends string, Data extends ValidatedData>(    path: Path,    ...handlers: Handler<ParamKeys<Path> extends never ? string : ParamKeys<Path>, E, Data>[]  ): U  (path: string, ...handlers: Handler<string, E>[]): U}
type Methods = typeof METHODS[number] | typeof METHOD_NAME_ALL_LOWERCASE
function defineDynamicClass(): {  new <E extends Partial<Environment> = Environment, T extends string = string, U = Hono<E, T>>(): {    [K in Methods]: HandlerInterface<T, E, U>  }} {  return class {} as any}
interface Route<  E extends Partial<Environment> = Environment,  D extends ValidatedData = ValidatedData> {  path: string  method: string  handler: Handler<string, E, D>}
export class Hono<  E extends Partial<Environment> = Environment,  P extends string = '/',  D extends ValidatedData = ValidatedData> extends defineDynamicClass()<E, P, Hono<E, P, D>> {  readonly router: Router<Handler<string, E, D>> = new SmartRouter({    routers: [new StaticRouter(), new RegExpRouter(), new TrieRouter()],  })  readonly strict: boolean = true // strict routing - default is true  private _tempPath: string = ''  private path: string = '/'
  routes: Route<E, D>[] = []
  constructor(init: Partial<Pick<Hono, 'router' | 'strict'>> = {}) {    super()
    extendRequestPrototype()
    const allMethods = [...METHODS, METHOD_NAME_ALL_LOWERCASE]    allMethods.map((method) => {      this[method] = <Path extends string = ''>(        args1: Path | Handler<ParamKeys<Path>, E, D>,        ...args: [Handler<ParamKeys<Path>, E, D>]      ): this => {        if (typeof args1 === 'string') {          this.path = args1        } else {          this.addRoute(method, this.path, args1)        }        args.map((handler) => {          if (typeof handler !== 'string') {            this.addRoute(method, this.path, handler)          }        })        return this      }    })
    Object.assign(this, init)  }
  private notFoundHandler: NotFoundHandler<E> = (c: Context<string, E>) => {    return c.text('404 Not Found', 404)  }
  private errorHandler: ErrorHandler<E> = (err: Error, c: Context<string, E>) => {    console.trace(err.message)    const message = 'Internal Server Error'    return c.text(message, 500)  }
  route(path: string, app?: Hono<any>): Hono<E, P, D> {    this._tempPath = path    if (app) {      app.routes.map((r) => {        this.addRoute(r.method, r.path, r.handler)      })      this._tempPath = ''    }
    return this  }
  use<Path extends string = string, Data extends ValidatedData = D>(    ...middleware: Handler<Path, E, Data>[]  ): Hono<E, Path, Data>  use<Path extends string = string, Data extends ValidatedData = D>(    arg1: string,    ...middleware: Handler<Path, E, Data>[]  ): Hono<E, Path, D>  use(arg1: string | Handler<string, E, D>, ...handlers: Handler<string, E, D>[]): Hono<E, P, D> {    if (typeof arg1 === 'string') {      this.path = arg1    } else {      handlers.unshift(arg1)    }    handlers.map((handler) => {      this.addRoute(METHOD_NAME_ALL, this.path, handler)    })    return this  }
  onError(handler: ErrorHandler<E>): Hono<E, P, D> {    this.errorHandler = handler    return this  }
  notFound(handler: NotFoundHandler<E>): Hono<E, P, D> {    this.notFoundHandler = handler    return this  }
  private addRoute(method: string, path: string, handler: Handler<string, E, D>): void {    method = method.toUpperCase()    if (this._tempPath) {      path = mergePath(this._tempPath, path)    }    this.router.add(method, path, handler)    const r: Route<E, D> = { path: path, method: method, handler: handler }    this.routes.push(r)  }
  private matchRoute(method: string, path: string) {    return this.router.match(method, path)  }
  private handleError(err: unknown, c: Context) {    if (err instanceof Error) {      return this.errorHandler(err, c)    }    throw err  }
  private dispatch(    request: Request,    eventOrExecutionCtx?: ExecutionContext | FetchEvent,    env?: E['Bindings']  ) {    const path = getPathFromURL(request.url, this.strict)    const method = request.method
    const result = this.matchRoute(method, path)    request.paramData = result?.params
    const c = new HonoContext<string, E, D>(request, env, eventOrExecutionCtx, this.notFoundHandler)
    // Do not `compose` if it has only one handler    if (result && result.handlers.length === 1) {      const handler = result.handlers[0]      let res: ReturnType<Handler>
      try {        res = handler(c, async () => {})        if (!res) return this.notFoundHandler(c)      } catch (err) {        return this.handleError(err, c)      }
      if (res instanceof Response) return res
      return (async () => {        let awaited: Response | undefined | void        try {          awaited = await res        } catch (err) {          return this.handleError(err, c)        }        if (!awaited) {          return this.notFoundHandler(c)        }        return awaited      })()    }
    const handlers = result ? result.handlers : [this.notFoundHandler]    const composed = compose<HonoContext<string, E>, E>(      handlers,      this.notFoundHandler,      this.errorHandler    )
    return (async () => {      try {        const tmp = composed(c)        const context = tmp instanceof Promise ? await tmp : tmp        if (!context.finalized) {          throw new Error(            'Context is not finalized. You may forget returning Response object or `await next()`'          )        }        return context.res      } catch (err) {        return this.handleError(err, c)      }    })()  }
  handleEvent = (event: FetchEvent) => {    return this.dispatch(event.request, event)  }
  fetch = (request: Request, Environment?: E['Bindings'], executionCtx?: ExecutionContext) => {    return this.dispatch(request, executionCtx, Environment)  }
  request = async (input: RequestInfo, requestInit?: RequestInit) => {    const req = input instanceof Request ? input : new Request(input, requestInit)    return await this.fetch(req)  }}