import * as plugins from './cloudflare.plugins.js';
import * as interfaces from './interfaces/index.js';
import { WorkerManager } from './cloudflare.classes.workermanager.js';
import { logger } from './cloudflare.logger.js';

export interface IWorkerRoute extends interfaces.ICflareWorkerRoute {
  zoneName: string;
}

export interface IWorkerRouteDefinition {
  zoneName: string;
  pattern: string;
}

export class CloudflareWorker {
  // STATIC
  public static async fromApiObject(
    workerManager: WorkerManager,
    apiObject
  ): Promise<CloudflareWorker> {
    const newWorker = new CloudflareWorker(workerManager);
    Object.assign(newWorker, apiObject);
    await newWorker.getRoutes();
    return newWorker;
  }

  // INSTANCE
  private workerManager: WorkerManager;

  public script: string;
  public id: string;
  public etag: string;
  // tslint:disable-next-line: variable-name
  public created_on: string;
  // tslint:disable-next-line: variable-name
  public modified_on: string;

  public routes: IWorkerRoute[] = [];
  constructor(workerManagerArg: WorkerManager) {
    this.workerManager = workerManagerArg;
  }

  /**
   * gets all routes for a worker
   */
  public async getRoutes() {
    const zones = await this.workerManager.cfAccount.convenience.listZones();
    
    for (const zone of zones) {
      try {
        // The official client doesn't have a direct method to list worker routes
        // We'll use the custom request method for this specific case
        const response: {
          result: interfaces.ICflareWorkerRoute[];
        } = await this.workerManager.cfAccount.request('GET', `/zones/${zone.id}/workers/routes`);
        
        for (const route of response.result) {
          logger.log('debug', `Processing route: ${route.pattern}`);
          logger.log('debug', `Comparing script: ${route.script} with worker ID: ${this.id}`);
          
          if (route.script === this.id) {
            this.routes.push({ ...route, zoneName: zone.name });
          }
        }
      } catch (error) {
        logger.log('error', `Failed to get worker routes for zone ${zone.name}: ${error.message}`);
      }
    }
  }

  /**
   * Sets routes for this worker
   * @param routeArray Array of route definitions
   */
  public async setRoutes(routeArray: IWorkerRouteDefinition[]) {
    for (const newRoute of routeArray) {
      // Determine whether a route is new, needs an update, or is already up to date
      let routeStatus: 'new' | 'needsUpdate' | 'alreadyUpToDate' = 'new';
      let routeIdForUpdate: string;
      
      for (const existingRoute of this.routes) {
        if (existingRoute.pattern === newRoute.pattern) {
          routeStatus = 'needsUpdate';
          routeIdForUpdate = existingRoute.id;
          
          if (existingRoute.script === this.id) {
            routeStatus = 'alreadyUpToDate';
            logger.log('info', `Route already exists, no update needed`);
          }
        }
      }

      try {
        const zoneId = await this.workerManager.cfAccount.convenience.getZoneId(newRoute.zoneName);
        
        // Handle route creation or update
        if (routeStatus === 'new') {
          // The official client doesn't have a direct method to create worker routes
          // We'll use the custom request method for this specific case
          await this.workerManager.cfAccount.request('POST', `/zones/${zoneId}/workers/routes`, {
            pattern: newRoute.pattern,
            script: this.id,
          });
          
          logger.log('info', `Created new route ${newRoute.pattern} for worker ${this.id}`);
        } else if (routeStatus === 'needsUpdate') {
          // The official client doesn't have a direct method to update worker routes
          // We'll use the custom request method for this specific case
          await this.workerManager.cfAccount.request('PUT', `/zones/${zoneId}/workers/routes/${routeIdForUpdate}`, {
            pattern: newRoute.pattern,
            script: this.id,
          });
          
          logger.log('info', `Updated route ${newRoute.pattern} for worker ${this.id}`);
        }
      } catch (error) {
        logger.log('error', `Failed to set route ${newRoute.pattern}: ${error.message}`);
      }
    }
  }
  
  /**
   * Upload or update worker script content
   * @param scriptContent The worker script content
   * @returns Updated worker object
   */
  public async updateScript(scriptContent: string): Promise<CloudflareWorker> {
    if (!this.workerManager.cfAccount.preselectedAccountId) {
      throw new Error('No account selected. Please select it first on the account.');
    }
    
    try {
      logger.log('info', `Updating script for worker ${this.id}`);
      
      // The official client requires the metadata property
      const updatedWorker = await this.workerManager.cfAccount.apiAccount.workers.scripts.content.update(this.id, {
        account_id: this.workerManager.cfAccount.preselectedAccountId,
        "CF-WORKER-BODY-PART": scriptContent,
        metadata: {} // Required empty object
      });
      
      // Update this instance with new data
      Object.assign(this, updatedWorker);
      
      return this;
    } catch (error) {
      logger.log('error', `Failed to update worker script: ${error.message}`);
      throw error;
    }
  }
  
  /**
   * Delete this worker script
   * @returns True if deletion was successful
   */
  public async delete(): Promise<boolean> {
    if (!this.workerManager.cfAccount.preselectedAccountId) {
      throw new Error('No account selected. Please select it first on the account.');
    }
    
    try {
      logger.log('info', `Deleting worker ${this.id}`);
      
      await this.workerManager.cfAccount.apiAccount.workers.scripts.delete(this.id, {
        account_id: this.workerManager.cfAccount.preselectedAccountId
      });
      
      return true;
    } catch (error) {
      logger.log('error', `Failed to delete worker: ${error.message}`);
      return false;
    }
  }
}