import { FastifyInstance } from "fastify";
import { z } from "zod";
import { seedTemplatesForBoard } from "../../lib/default-templates.js";
import { prisma } from "../../lib/prisma.js";

const safeUrl = z.string().url().refine((u) => /^https?:\/\//i.test(u), { message: "URL must use http or https" });

const iconName = z.string().max(80).regex(/^Icon[A-Za-z0-9]+$/).optional().nullable();
const iconColor = z.string().max(30).regex(/^#[0-9a-fA-F]{3,8}$/).optional().nullable();

const createBoardBody = z.object({
  slug: z.string().min(2).max(50).regex(/^[a-z0-9-]+$/),
  name: z.string().min(1).max(100),
  description: z.string().max(500).optional(),
  externalUrl: safeUrl.optional(),
  iconName,
  iconColor,
  voteBudget: z.number().int().min(0).default(10),
  voteBudgetReset: z.enum(["weekly", "biweekly", "monthly", "quarterly", "per_release", "never"]).default("monthly"),
  allowMultiVote: z.boolean().default(false),
  rssEnabled: z.boolean().default(true),
  rssFeedCount: z.number().int().min(1).max(200).default(50),
  staleDays: z.number().int().min(0).max(365).default(0),
});

const updateBoardBody = z.object({
  name: z.string().min(1).max(100).optional(),
  description: z.string().max(500).optional().nullable(),
  externalUrl: safeUrl.optional().nullable(),
  iconName,
  iconColor,
  isArchived: z.boolean().optional(),
  voteBudget: z.number().int().min(0).optional(),
  voteBudgetReset: z.enum(["weekly", "biweekly", "monthly", "quarterly", "per_release", "never"]).optional(),
  allowMultiVote: z.boolean().optional(),
  rssEnabled: z.boolean().optional(),
  rssFeedCount: z.number().int().min(1).max(200).optional(),
  staleDays: z.number().int().min(0).max(365).optional(),
});

export default async function adminBoardRoutes(app: FastifyInstance) {
  app.get(
    "/admin/boards",
    { preHandler: [app.requireAdmin, app.requireRole("SUPER_ADMIN", "ADMIN")], config: { rateLimit: { max: 60, timeWindow: "1 minute" } } },
    async (_req, reply) => {
      const boards = await prisma.board.findMany({
        orderBy: [{ position: "asc" }, { createdAt: "asc" }],
        include: {
          _count: { select: { posts: true } },
        },
      });
      reply.send(boards);
    }
  );

  app.post<{ Body: z.infer<typeof createBoardBody> }>(
    "/admin/boards",
    { preHandler: [app.requireAdmin, app.requireRole("SUPER_ADMIN", "ADMIN")], config: { rateLimit: { max: 20, timeWindow: "1 minute" } } },
    async (req, reply) => {
      const body = createBoardBody.parse(req.body);

      const existing = await prisma.board.findUnique({ where: { slug: body.slug } });
      if (existing) {
        reply.status(409).send({ error: "Slug already taken" });
        return;
      }

      const board = await prisma.board.create({ data: body });
      await seedTemplatesForBoard(prisma, board.id);
      req.log.info({ adminId: req.adminId, boardId: board.id, slug: board.slug }, "board created");
      reply.status(201).send(board);
    }
  );

  app.put<{ Params: { id: string }; Body: z.infer<typeof updateBoardBody> }>(
    "/admin/boards/:id",
    { preHandler: [app.requireAdmin, app.requireRole("SUPER_ADMIN", "ADMIN")], config: { rateLimit: { max: 20, timeWindow: "1 minute" } } },
    async (req, reply) => {
      const board = await prisma.board.findUnique({ where: { id: req.params.id } });
      if (!board) {
        reply.status(404).send({ error: "Board not found" });
        return;
      }

      const body = updateBoardBody.parse(req.body);
      const updated = await prisma.board.update({
        where: { id: board.id },
        data: body,
      });

      req.log.info({ adminId: req.adminId, boardId: board.id }, "board updated");
      reply.send(updated);
    }
  );

  app.post<{ Params: { id: string } }>(
    "/admin/boards/:id/reset-budget",
    { preHandler: [app.requireAdmin, app.requireRole("SUPER_ADMIN", "ADMIN")], config: { rateLimit: { max: 20, timeWindow: "1 minute" } } },
    async (req, reply) => {
      const board = await prisma.board.findUnique({ where: { id: req.params.id } });
      if (!board) {
        reply.status(404).send({ error: "Board not found" });
        return;
      }

      const updated = await prisma.board.update({
        where: { id: board.id },
        data: { lastBudgetReset: new Date() },
      });

      req.log.info({ adminId: req.adminId, boardId: board.id }, "budget reset");
      reply.send(updated);
    }
  );

  app.delete<{ Params: { id: string } }>(
    "/admin/boards/:id",
    { preHandler: [app.requireAdmin, app.requireRole("SUPER_ADMIN")], config: { rateLimit: { max: 30, timeWindow: "1 minute" } } },
    async (req, reply) => {
      const board = await prisma.board.findUnique({ where: { id: req.params.id } });
      if (!board) {
        reply.status(404).send({ error: "Board not found" });
        return;
      }

      await prisma.board.delete({ where: { id: board.id } });
      req.log.info({ adminId: req.adminId, boardId: board.id, boardSlug: board.slug }, "board deleted");
      reply.status(204).send();
    }
  );

  // reorder boards
  app.put(
    "/admin/boards/reorder",
    { preHandler: [app.requireAdmin, app.requireRole("SUPER_ADMIN", "ADMIN")], config: { rateLimit: { max: 10, timeWindow: "1 minute" } } },
    async (req, reply) => {
      const body = z.object({ boardIds: z.array(z.string().min(1)).min(1) }).parse(req.body);
      await prisma.$transaction(
        body.boardIds.map((id, i) => prisma.board.update({ where: { id }, data: { position: i } }))
      );
      reply.send({ ok: true });
    }
  );
}