import {
    Controller,
    Get,
    Post,
    Put,
    Delete,
    Param,
    Body,
    Query,
    UseGuards,
    Req,
    ForbiddenException,
} from "@nestjs/common";
import {
    ApiTags,
    ApiOperation,
    ApiParam,
    ApiQuery,
    ApiResponse,
    ApiBearerAuth,
} from "@nestjs/swagger";
import { Throttle } from "@nestjs/throttler";

import { BetterAuthGuard } from "../auth/better-auth.guard";
import { PodcastAccessGuard } from "../common/guards/podcast-access.guard";
import { NetworkService } from "./network.service";
import {
    CreateGuestPublicProfileDto,
    UpdateGuestPublicProfileDto,
    GuestNetworkSearchDto,
    CreateNetworkBookingRequestDto,
    RespondToBookingRequestDto,
    CreateNetworkBookmarkDto,
    UpdateNetworkBookmarkDto,
    CreateHostReviewDto,
    TrackProfileViewDto,
} from "./network.dto";

@ApiTags("Network")
@Controller("network")
export class NetworkController {
    constructor(private readonly networkService: NetworkService) {}

    // ─── Public Endpoints ────────────────────────────────

    @Get("guests/search")
    @Throttle({ default: { limit: 30, ttl: 60000 } })
    @ApiOperation({ summary: "Search the guest network" })
    @ApiResponse({ status: 200, description: "Search results" })
    async searchGuests(@Query() query: GuestNetworkSearchDto) {
        return this.networkService.searchProfiles(query as any);
    }

    @Get("guests/trending")
    @ApiOperation({ summary: "Get trending guest voices" })
    @ApiQuery({ name: "region", required: false, example: "east-africa" })
    @ApiQuery({ name: "limit", required: false, example: 10 })
    async getTrending(
        @Query("region") region?: string,
        @Query("limit") limit?: number,
    ) {
        return this.networkService.getTrending(region, limit || 10);
    }

    @Get("guests/:vanityUrl")
    @ApiOperation({ summary: "Get public guest profile by vanity URL" })
    @ApiParam({ name: "vanityUrl", example: "john-nduati" })
    async getProfile(@Param("vanityUrl") vanityUrl: string) {
        return this.networkService.getProfileByVanityUrl(vanityUrl);
    }

    @Post("views")
    @ApiOperation({ summary: "Track a profile view" })
    async trackView(@Body() body: TrackProfileViewDto) {
        return this.networkService.trackView(body as any);
    }

    // ─── Protected Endpoints ─────────────────────────────

    @Post("profiles")
    @UseGuards(BetterAuthGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Create your public guest profile" })
    @ApiResponse({ status: 201, description: "Profile created" })
    @ApiResponse({ status: 409, description: "Profile already exists" })
    async createProfile(
        @Req() req: any,
        @Body() body: CreateGuestPublicProfileDto,
    ) {
        return this.networkService.createProfile(req.userId, body as any);
    }

    @Put("profiles/me")
    @UseGuards(BetterAuthGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Update your public guest profile" })
    async updateMyProfile(
        @Req() req: any,
        @Body() body: UpdateGuestPublicProfileDto,
    ) {
        return this.networkService.updateProfile(req.userId, body as any);
    }

    @Get("profiles/me")
    @UseGuards(BetterAuthGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Get your public profile with analytics" })
    async getMyProfile(@Req() req: any) {
        return this.networkService.getMyProfile(req.userId);
    }

    @Get("profiles/:id/views")
    @UseGuards(BetterAuthGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Get profile view statistics" })
    @ApiParam({ name: "id" })
    @ApiQuery({ name: "days", required: false, example: 30 })
    async getViewStats(
        @Req() req: any,
        @Param("id") id: string,
        @Query("days") days?: number,
    ) {
        // SECURITY: `req.userId` is set by BetterAuthGuard from the verified session.
        // Never trust client-supplied identity headers (e.g. `x-user-id`) for
        // authorization decisions. getProfileViewStats enforces ownership
        // server-side.
        return this.networkService.getProfileViewStats(req.userId, id, days || 30);
    }

    // ─── Bookmarks ───────────────────────────────────────

    @Post("bookmarks")
    @UseGuards(BetterAuthGuard, PodcastAccessGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Bookmark a guest profile" })
    async createBookmark(
        @Body() body: CreateNetworkBookmarkDto,
        @Req() req: any,
    ) {
        return this.networkService.createBookmark(body as any, req.userId);
    }

    @Put("bookmarks/:id")
    @UseGuards(BetterAuthGuard, PodcastAccessGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Update a bookmark" })
    async updateBookmark(
        @Req() req: any,
        @Param("id") id: string,
        @Body() body: UpdateNetworkBookmarkDto,
    ) {
        return this.networkService.updateBookmark(req.userId, id, body as any);
    }

    @Delete("bookmarks/:id")
    @UseGuards(BetterAuthGuard, PodcastAccessGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Remove a bookmark" })
    async removeBookmark(
        @Req() req: any,
        @Param("id") id: string,
    ) {
        return this.networkService.removeBookmark(req.userId, id);
    }

    @Get("bookmarks")
    @UseGuards(BetterAuthGuard, PodcastAccessGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "List bookmarked guest profiles" })
    @ApiQuery({ name: "podcastId", required: true })
    @ApiQuery({ name: "status", required: false })
    async listBookmarks(
        @Req() req: any,
        @Query("podcastId") podcastId: string,
        @Query("status") status?: string,
    ) {
        return this.networkService.listBookmarks(podcastId, req.userId, status);
    }

    // ─── Booking Requests ────────────────────────────────

    @Post("booking-requests")
    @UseGuards(BetterAuthGuard, PodcastAccessGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Send a booking request to a guest" })
    @ApiResponse({ status: 201, description: "Booking request created" })
    async createBookingRequest(
        @Body() body: CreateNetworkBookingRequestDto,
        @Req() req: any,
    ) {
        return this.networkService.createBookingRequest(body as any, req.userId);
    }

    @Put("booking-requests/:id/respond")
    @UseGuards(BetterAuthGuard, PodcastAccessGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Accept or decline a booking request" })
    @ApiParam({ name: "id" })
    async respondToBookingRequest(
        @Req() req: any,
        @Param("id") id: string,
        @Body() body: RespondToBookingRequestDto,
    ) {
        return this.networkService.respondToBookingRequest(
            id,
            req.userId,
            body.status,
        );
    }

    @Get("booking-requests/received")
    @UseGuards(BetterAuthGuard, PodcastAccessGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "List received booking requests" })
    @ApiQuery({ name: "profileId", required: true })
    @ApiQuery({ name: "status", required: false })
    async listBookingRequests(
        @Req() req: any,
        @Query("profileId") profileId: string,
        @Query("status") status?: string,
    ) {
        return this.networkService.listBookingRequests(req.userId, profileId, status);
    }

    @Get("booking-requests/sent")
    @UseGuards(BetterAuthGuard, PodcastAccessGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "List sent booking requests" })
    @ApiQuery({ name: "podcastId", required: true })
    @ApiQuery({ name: "status", required: false })
    async listSentBookingRequests(
        @Req() req: any,
        @Query("podcastId") podcastId: string,
        @Query("status") status?: string,
    ) {
        return this.networkService.listSentBookingRequests(req.userId, podcastId, status);
    }

    // ─── Reviews ─────────────────────────────────────────

    @Post("reviews")
    @UseGuards(BetterAuthGuard, PodcastAccessGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Submit a host review for a guest" })
    async submitReview(
        @Req() req: any,
        @Body() body: CreateHostReviewDto,
    ) {
        return this.networkService.submitReview(req.userId, body as any);
    }

    // ─── Reputation ──────────────────────────────────────

    @Get("profiles/:id/reputation")
    @UseGuards(BetterAuthGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Get reputation insights for a profile" })
    @ApiParam({ name: "id" })
    async getReputationInsights(
        @Req() req: any,
        @Param("id") id: string,
    ) {
        return this.networkService.getReputationInsights(req.userId, id);
    }

    @Post("profiles/:id/reputation/recalculate")
    @UseGuards(BetterAuthGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Recalculate reputation score for a profile" })
    @ApiParam({ name: "id" })
    async recalculateReputation(
        @Req() req: any,
        @Param("id") id: string,
    ) {
        return this.networkService.recalculateReputation(req.userId, id);
    }

    // ─── Recommendations ─────────────────────────────────

    @Get("profiles/:id/recommendations")
    @UseGuards(BetterAuthGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Get guest recommendations based on network graph" })
    @ApiParam({ name: "id" })
    @ApiQuery({ name: "limit", required: false, example: 5 })
    async getRecommendations(
        @Req() req: any,
        @Param("id") id: string,
        @Query("limit") limit?: number,
    ) {
        return this.networkService.getRecommendations(req.userId, id, limit || 5);
    }

    @Get("profiles/:id/network-stats")
    @UseGuards(BetterAuthGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Get social network statistics for a profile" })
    @ApiParam({ name: "id" })
    async getProfileNetworkStats(
        @Req() req: any,
        @Param("id") id: string,
    ) {
        return this.networkService.getProfileNetworkStats(req.userId, id);
    }

    // ─── Podcast Network Stats ───────────────────────────

    @Get("stats/:podcastId")
    @UseGuards(BetterAuthGuard, PodcastAccessGuard)
    @ApiBearerAuth()
    @ApiOperation({ summary: "Get network usage statistics for a podcast" })
    @ApiParam({ name: "podcastId" })
    async getPodcastNetworkStats(
        @Param("podcastId") podcastId: string,
        @Req() req: any,
    ) {
        return this.networkService.getPodcastNetworkStats(podcastId, req.userId);
    }

    // ─── Admin ───────────────────────────────────────────

  @Put("admin/verify/:profileId")
  @UseGuards(BetterAuthGuard)
  @ApiBearerAuth()
  @ApiOperation({ summary: "Verify a guest profile (admin)" })
  @ApiParam({ name: "profileId" })
  async verifyProfile(
    @Req() req: any,
    @Param("profileId") profileId: string,
    @Body() body: { status: "basic" | "verified" | "featured" },
  ) {
    // SECURITY: `req.userId` is set by BetterAuthGuard from the verified session.
    // Using the client-controlled `x-user-id` header here would let any
    // authenticated user impersonate an admin for this endpoint.
    return this.networkService.verifyProfile(req.userId, profileId, body.status);
  }
}