import * as plugins from '../plugins.js';
import type { Reception } from './classes.reception.js';
import { App } from './classes.app.js';

export class AppManager {
  public receptionRef: Reception;
  public get db() {
    return this.receptionRef.db.smartdataDb;
  }
  public typedrouter = new plugins.typedrequest.TypedRouter();

  public CApp = plugins.smartdata.setDefaultManagerForDoc(this, App);

  constructor(receptionRefArg: Reception) {
    this.receptionRef = receptionRefArg;
    this.receptionRef.typedrouter.addTypedRouter(this.typedrouter);

    // Handler: Get all global apps (for org owners)
    this.typedrouter.addTypedHandler(
      new plugins.typedrequest.TypedHandler<plugins.idpInterfaces.request.IReq_GetGlobalApps>(
        'getGlobalApps',
        async (requestArg) => {
          // Verify JWT
          await this.receptionRef.jwtManager.verifyJWTAndGetData(requestArg.jwt);

          // Get all active global apps
          const globalApps = await this.CApp.getInstances({
            type: 'global',
            'data.isActive': true,
          });

          const appObjects = await Promise.all(
            globalApps.map(async (app) => await app.createSavableObject() as plugins.idpInterfaces.data.IGlobalApp)
          );

          return {
            apps: appObjects,
          };
        }
      )
    );

    // Handler: Check if user is global admin
    this.typedrouter.addTypedHandler(
      new plugins.typedrequest.TypedHandler<plugins.idpInterfaces.request.IReq_CheckGlobalAdmin>(
        'checkGlobalAdmin',
        async (requestArg) => {
          const user = await this.receptionRef.userManager.getUserByJwt(requestArg.jwt);
          return {
            isGlobalAdmin: user?.data?.isGlobalAdmin ?? false,
          };
        }
      )
    );

    // Handler: Get global apps with stats (admin only)
    this.typedrouter.addTypedHandler(
      new plugins.typedrequest.TypedHandler<plugins.idpInterfaces.request.IReq_GetGlobalAppStats>(
        'getGlobalAppStats',
        async (requestArg) => {
          await this.verifyGlobalAdmin(requestArg.jwt);

          // Get all global apps (including inactive)
          const globalApps = await this.CApp.getInstances({
            type: 'global',
          });

          const appsWithStats = await Promise.all(
            globalApps.map(async (app) => {
              const connections = await this.receptionRef.appConnectionManager.CAppConnection.getInstances({
                'data.appId': app.id,
                'data.status': 'active',
              });
              return {
                app: await app.createSavableObject() as plugins.idpInterfaces.data.IGlobalApp,
                connectionCount: connections.length,
              };
            })
          );

          return { apps: appsWithStats };
        }
      )
    );

    // Handler: Create global app (admin only)
    this.typedrouter.addTypedHandler(
      new plugins.typedrequest.TypedHandler<plugins.idpInterfaces.request.IReq_CreateGlobalApp>(
        'createGlobalApp',
        async (requestArg) => {
          const jwtData = await this.verifyGlobalAdmin(requestArg.jwt);

          // Generate OAuth credentials
          const clientId = `app-${plugins.smartunique.shortId(12)}`;
          const clientSecret = plugins.smartunique.shortId(32);
          const clientSecretHash = await plugins.smarthash.sha256FromString(clientSecret);

          const app = new App();
          app.id = `app-${plugins.smartunique.shortId(8)}`;
          app.type = 'global';
          app.data = {
            name: requestArg.name,
            description: requestArg.description,
            logoUrl: requestArg.logoUrl,
            appUrl: requestArg.appUrl,
            category: requestArg.category,
            isActive: true,
            createdAt: Date.now(),
            createdByUserId: jwtData.data.userId,
            oauthCredentials: {
              clientId,
              clientSecretHash,
              redirectUris: requestArg.redirectUris,
              allowedScopes: requestArg.allowedScopes,
              grantTypes: ['authorization_code', 'refresh_token'],
            },
          };
          await app.save();

          return {
            app: await app.createSavableObject() as plugins.idpInterfaces.data.IGlobalApp,
            clientSecret, // Only shown once
          };
        }
      )
    );

    // Handler: Update global app (admin only)
    this.typedrouter.addTypedHandler(
      new plugins.typedrequest.TypedHandler<plugins.idpInterfaces.request.IReq_UpdateGlobalApp>(
        'updateGlobalApp',
        async (requestArg) => {
          await this.verifyGlobalAdmin(requestArg.jwt);

          const app = await this.CApp.getInstance({ id: requestArg.appId });
          if (!app) {
            throw new Error('App not found');
          }

          if (!app.isGlobalApp()) {
            throw new Error('Can only update global apps');
          }

          // Update allowed fields - cast data to global app type after type guard
          const appData = app.data as plugins.idpInterfaces.data.IGlobalApp['data'];
          if (requestArg.updates.name !== undefined) appData.name = requestArg.updates.name;
          if (requestArg.updates.description !== undefined) appData.description = requestArg.updates.description;
          if (requestArg.updates.logoUrl !== undefined) appData.logoUrl = requestArg.updates.logoUrl;
          if (requestArg.updates.appUrl !== undefined) appData.appUrl = requestArg.updates.appUrl;
          if (requestArg.updates.category !== undefined) appData.category = requestArg.updates.category;
          if (requestArg.updates.isActive !== undefined) appData.isActive = requestArg.updates.isActive;
          if (requestArg.updates.redirectUris !== undefined) appData.oauthCredentials.redirectUris = requestArg.updates.redirectUris;
          if (requestArg.updates.allowedScopes !== undefined) appData.oauthCredentials.allowedScopes = requestArg.updates.allowedScopes;

          await app.save();

          return {
            app: await app.createSavableObject() as plugins.idpInterfaces.data.IGlobalApp,
          };
        }
      )
    );

    // Handler: Delete global app (admin only)
    this.typedrouter.addTypedHandler(
      new plugins.typedrequest.TypedHandler<plugins.idpInterfaces.request.IReq_DeleteGlobalApp>(
        'deleteGlobalApp',
        async (requestArg) => {
          await this.verifyGlobalAdmin(requestArg.jwt);

          const app = await this.CApp.getInstance({ id: requestArg.appId });
          if (!app) {
            throw new Error('App not found');
          }

          // Get and disconnect all connections
          const connections = await this.receptionRef.appConnectionManager.CAppConnection.getInstances({
            'data.appId': requestArg.appId,
          });

          for (const connection of connections) {
            await connection.delete();
          }

          await app.delete();

          return {
            success: true,
            disconnectedOrganizations: connections.length,
          };
        }
      )
    );

    // Handler: Regenerate OAuth credentials (admin only)
    this.typedrouter.addTypedHandler(
      new plugins.typedrequest.TypedHandler<plugins.idpInterfaces.request.IReq_RegenerateAppCredentials>(
        'regenerateAppCredentials',
        async (requestArg) => {
          await this.verifyGlobalAdmin(requestArg.jwt);

          const app = await this.CApp.getInstance({ id: requestArg.appId });
          if (!app) {
            throw new Error('App not found');
          }

          // Generate new credentials
          const clientId = `app-${plugins.smartunique.shortId(12)}`;
          const clientSecret = plugins.smartunique.shortId(32);
          const clientSecretHash = await plugins.smarthash.sha256FromString(clientSecret);

          app.data.oauthCredentials.clientId = clientId;
          app.data.oauthCredentials.clientSecretHash = clientSecretHash;
          await app.save();

          return {
            clientId,
            clientSecret, // Only shown once
          };
        }
      )
    );
  }

  /**
   * Verify that the user is a global admin
   */
  private async verifyGlobalAdmin(jwt: string) {
    const jwtData = await this.receptionRef.jwtManager.verifyJWTAndGetData(jwt);
    const user = await this.receptionRef.userManager.getUserByJwt(jwt);
    if (!user?.data?.isGlobalAdmin) {
      throw new Error('Access denied: Global admin privileges required');
    }
    return jwtData;
  }

  /**
   * Get all global apps
   */
  public async getGlobalApps(): Promise<App[]> {
    return await this.CApp.getInstances({
      type: 'global',
    });
  }

  /**
   * Get app by ID
   */
  public async getAppById(appId: string): Promise<App | null> {
    return await this.CApp.getInstance({
      id: appId,
    });
  }

  /**
   * Seed initial global apps (for development/testing)
   */
  public async seedGlobalApps() {
    const defaultGlobalApps: Partial<plugins.idpInterfaces.data.IGlobalApp>[] = [
      {
        id: 'app-foss-global',
        type: 'global',
        data: {
          name: 'foss.global',
          description: 'Open Source Package Registry and Collaboration Platform',
          logoUrl: 'https://foss.global/assets/logo.png',
          appUrl: 'https://foss.global',
          oauthCredentials: {
            clientId: 'foss-global-client',
            clientSecretHash: '', // Will be set when OAuth is configured
            redirectUris: ['https://foss.global/auth/callback'],
            allowedScopes: ['openid', 'profile', 'email', 'organizations'],
            grantTypes: ['authorization_code', 'refresh_token'],
          },
          isActive: true,
          category: 'Development',
          createdAt: Date.now(),
          createdByUserId: 'system',
        },
      },
      {
        id: 'app-task-vc',
        type: 'global',
        data: {
          name: 'task.vc',
          description: 'Task Management and Project Collaboration',
          logoUrl: 'https://task.vc/assets/logo.png',
          appUrl: 'https://task.vc',
          oauthCredentials: {
            clientId: 'task-vc-client',
            clientSecretHash: '',
            redirectUris: ['https://task.vc/auth/callback'],
            allowedScopes: ['openid', 'profile', 'email', 'organizations'],
            grantTypes: ['authorization_code', 'refresh_token'],
          },
          isActive: true,
          category: 'Productivity',
          createdAt: Date.now(),
          createdByUserId: 'system',
        },
      },
    ];

    for (const appData of defaultGlobalApps) {
      const existing = await this.CApp.getInstance({ id: appData.id });
      if (!existing) {
        const app = new App();
        app.id = appData.id!;
        app.type = appData.type!;
        app.data = appData.data as any;
        await app.save();
      }
    }
  }
}