/**
 * @copyright 2026 NHCarrigan
 * @license Naomi's Public License
 * @author Naomi Carrigan
 */

import { FastifyPluginAsync } from "fastify";
import { Music, CreateMusicDto, UpdateMusicDto, Comment, CreateCommentDto, AuditAction, AuditCategory } from "@library/shared-types";
import { MusicService } from "../../services/music.service";
import { CommentService } from "../../services/comment.service";
import { AuditService } from "../../services/audit.service";
import { adminGuard } from "../../middleware/admin-guard";
import { bannedGuard } from "../../middleware/banned-guard";

const musicRoutes: FastifyPluginAsync = async (app) => {
  const musicService = new MusicService();
  const commentService = new CommentService();

  /**
   * Get all music (public route).
   */
  app.get<{ Reply: Music[] }>("/", async () => {
    return musicService.getAllMusic();
  });

  /**
   * Get single music item by ID (public route).
   */
  app.get<{ Params: { id: string }; Reply: Music | null }>(
    "/:id",
    async (request) => {
      const { id } = request.params;
      return musicService.getMusicById(id);
    }
  );

  /**
   * Create new music item (admin only).
   */
  app.post<{ Body: CreateMusicDto; Reply: Music }>(
    "/",
    {
      preValidation: [app.authenticate, adminGuard],
      preHandler: [app.csrfProtection],
    },
    async (request) => {
      const music = await musicService.createMusic(request.body);
      await AuditService.logFromRequest(request, {
        action: AuditAction.ENTRY_CREATE,
        category: AuditCategory.CONTENT,
        resourceType: "music",
        resourceId: music.id,
        details: `Created music: ${music.title}`,
      });
      return music;
    }
  );

  /**
   * Update music item by ID (admin only).
   */
  app.put<{
    Params: { id: string };
    Body: UpdateMusicDto;
    Reply: Music | null;
  }>(
    "/:id",
    {
      preValidation: [app.authenticate, adminGuard],
      preHandler: [app.csrfProtection],
    },
    async (request) => {
      const { id } = request.params;
      const music = await musicService.updateMusic(id, request.body);
      if (music) {
        await AuditService.logFromRequest(request, {
          action: AuditAction.ENTRY_UPDATE,
          category: AuditCategory.CONTENT,
          resourceType: "music",
          resourceId: id,
          details: `Updated music: ${music.title}`,
        });
      }
      return music;
    }
  );

  /**
   * Delete music item by ID (admin only).
   */
  app.delete<{ Params: { id: string }; Reply: { success: boolean } }>(
    "/:id",
    {
      preValidation: [app.authenticate, adminGuard],
      preHandler: [app.csrfProtection],
    },
    async (request) => {
      const { id } = request.params;
      await musicService.deleteMusic(id);
      await AuditService.logFromRequest(request, {
        action: AuditAction.ENTRY_DELETE,
        category: AuditCategory.CONTENT,
        resourceType: "music",
        resourceId: id,
        details: `Deleted music with ID: ${id}`,
      });
      return { success: true };
    }
  );

  /**
   * Get comments for a music item (public route).
   */
  app.get<{ Params: { id: string }; Reply: Comment[] }>(
    "/:id/comments",
    async (request) => {
      const { id } = request.params;
      return commentService.getCommentsForMusic(id);
    }
  );

  /**
   * Add comment to a music item (authenticated users).
   */
  app.post<{ Params: { id: string }; Body: CreateCommentDto; Reply: Comment }>(
    "/:id/comments",
    {
      preValidation: [app.authenticate, bannedGuard],
      preHandler: [app.csrfProtection],
    },
    async (request) => {
      const { id } = request.params;
      const userId = request.user.id;
      const comment = await commentService.createCommentForMusic(id, userId, request.body);
      await AuditService.logFromRequest(request, {
        action: AuditAction.COMMENT_CREATE,
        category: AuditCategory.CONTENT,
        resourceType: "music",
        resourceId: id,
        details: `Added comment to music`,
      });
      return comment;
    }
  );

  /**
   * Update comment (owner or admin).
   */
  app.put<{ Params: { id: string; commentId: string }; Body: CreateCommentDto; Reply: Comment | { error: string } }>(
    "/:id/comments/:commentId",
    {
      preValidation: [app.authenticate],
      preHandler: [app.csrfProtection],
    },
    async (request, reply) => {
      const { id, commentId } = request.params;
      const userId = request.user.id;
      const isAdmin = request.user.isAdmin;

      const verification = await commentService.verifyCommentOwnership(commentId, "music", id);

      if (!verification.exists) {
        return reply.code(404).send({ error: "Comment not found" });
      }

      if (verification.comment?.userId !== userId && !isAdmin) {
        return reply.code(403).send({ error: "You can only edit your own comments" });
      }

      const comment = await commentService.updateComment(commentId, request.body.content);
      await AuditService.logFromRequest(request, {
        action: AuditAction.COMMENT_UPDATE,
        category: AuditCategory.CONTENT,
        resourceType: "music",
        resourceId: id,
        details: `Updated comment ${commentId} on music`,
      });
      return comment;
    }
  );

  /**
   * Delete comment (owner or admin).
   */
  app.delete<{ Params: { id: string; commentId: string }; Reply: { success: boolean } | { error: string } }>(
    "/:id/comments/:commentId",
    {
      preValidation: [app.authenticate],
      preHandler: [app.csrfProtection],
    },
    async (request, reply) => {
      const { id, commentId } = request.params;
      const userId = request.user.id;
      const isAdmin = request.user.isAdmin;

      const verification = await commentService.verifyCommentOwnership(commentId, "music", id);

      if (!verification.exists) {
        return reply.code(404).send({ error: "Comment not found" });
      }

      if (verification.comment?.userId !== userId && !isAdmin) {
        return reply.code(403).send({ error: "You can only delete your own comments" });
      }

      await commentService.deleteComment(commentId);
      await AuditService.logFromRequest(request, {
        action: AuditAction.COMMENT_DELETE,
        category: isAdmin && verification.comment?.userId !== userId ? AuditCategory.ADMIN : AuditCategory.CONTENT,
        resourceType: "music",
        resourceId: id,
        details: `Deleted comment ${commentId} from music`,
      });
      return { success: true };
    }
  );
};

export default musicRoutes;