/**
 * Auth API handlers
 */

import type { IApiContext, IApiResponse } from '../router.ts';
import { AuthService } from '../../services/auth.service.ts';

export class AuthApi {
  private authService: AuthService;

  constructor(authService: AuthService) {
    this.authService = authService;
  }

  /**
   * POST /api/v1/auth/login
   */
  public async login(ctx: IApiContext): Promise<IApiResponse> {
    try {
      const body = await ctx.request.json();
      const { email, password } = body;

      if (!email || !password) {
        return {
          status: 400,
          body: { error: 'Email and password are required' },
        };
      }

      const result = await this.authService.login(email, password, {
        userAgent: ctx.userAgent,
        ipAddress: ctx.ip,
      });

      if (!result.success) {
        return {
          status: 401,
          body: {
            error: result.errorMessage,
            code: result.errorCode,
          },
        };
      }

      return {
        status: 200,
        body: {
          user: {
            id: result.user!.id,
            email: result.user!.email,
            username: result.user!.username,
            displayName: result.user!.displayName,
            isSystemAdmin: result.user!.isSystemAdmin,
          },
          accessToken: result.accessToken,
          refreshToken: result.refreshToken,
          sessionId: result.sessionId,
        },
      };
    } catch (error) {
      console.error('[AuthApi] Login error:', error);
      return {
        status: 500,
        body: { error: 'Login failed' },
      };
    }
  }

  /**
   * POST /api/v1/auth/refresh
   */
  public async refresh(ctx: IApiContext): Promise<IApiResponse> {
    try {
      const body = await ctx.request.json();
      const { refreshToken } = body;

      if (!refreshToken) {
        return {
          status: 400,
          body: { error: 'Refresh token is required' },
        };
      }

      const result = await this.authService.refresh(refreshToken);

      if (!result.success) {
        return {
          status: 401,
          body: {
            error: result.errorMessage,
            code: result.errorCode,
          },
        };
      }

      return {
        status: 200,
        body: {
          accessToken: result.accessToken,
        },
      };
    } catch (error) {
      console.error('[AuthApi] Refresh error:', error);
      return {
        status: 500,
        body: { error: 'Token refresh failed' },
      };
    }
  }

  /**
   * POST /api/v1/auth/logout
   */
  public async logout(ctx: IApiContext): Promise<IApiResponse> {
    if (!ctx.actor?.userId) {
      return {
        status: 401,
        body: { error: 'Authentication required' },
      };
    }

    try {
      const body = await ctx.request.json().catch(() => ({}));
      const { sessionId, all } = body;

      if (all) {
        const count = await this.authService.logoutAll(ctx.actor.userId, {
          ipAddress: ctx.ip,
        });
        return {
          status: 200,
          body: { message: `Logged out from ${count} sessions` },
        };
      }

      if (sessionId) {
        await this.authService.logout(sessionId, {
          userId: ctx.actor.userId,
          ipAddress: ctx.ip,
        });
      }

      return {
        status: 200,
        body: { message: 'Logged out successfully' },
      };
    } catch (error) {
      console.error('[AuthApi] Logout error:', error);
      return {
        status: 500,
        body: { error: 'Logout failed' },
      };
    }
  }

  /**
   * GET /api/v1/auth/me
   */
  public async me(ctx: IApiContext): Promise<IApiResponse> {
    if (!ctx.actor?.userId || !ctx.actor.user) {
      return {
        status: 401,
        body: { error: 'Authentication required' },
      };
    }

    const user = ctx.actor.user;

    return {
      status: 200,
      body: {
        id: user.id,
        email: user.email,
        username: user.username,
        displayName: user.displayName,
        avatarUrl: user.avatarUrl,
        isSystemAdmin: user.isSystemAdmin,
        isActive: user.isActive,
        createdAt: user.createdAt,
        lastLoginAt: user.lastLoginAt,
      },
    };
  }
}