import { z } from "zod";
import { TRPCError } from "@trpc/server";
import { COOKIE_NAME } from "@shared/const";
import { getSessionCookieOptions } from "./_core/cookies";
import { systemRouter } from "./_core/systemRouter";
import { publicProcedure, protectedProcedure, router } from "./_core/trpc";
import {
  getVeilleItems,
  getVeilleDistinctValues,
  getAapItems,
  getAapDistinctValues,
  getAllSettings,
  setSettings,
  getImportLogs,
  getImportStats,
  getLocalUsers,
  createLocalUser,
  updateLocalUser,
  deleteLocalUser,
} from "./db";
import { importVeille, importAAP, runFullImport, getImportConfig } from "./importer";
import { loginLocalUser, hashPassword, ensureAdminExists } from "./localAuth";

// ─── Middleware admin ─────────────────────────────────────────────────────────

const adminProcedure = protectedProcedure.use(({ ctx, next }) => {
  if (ctx.user.role !== "admin") {
    throw new TRPCError({ code: "FORBIDDEN", message: "Accès réservé aux administrateurs" });
  }
  return next({ ctx });
});

// ─── Router principal ─────────────────────────────────────────────────────────

export const appRouter = router({
  system: systemRouter,

  // ─── Auth ───────────────────────────────────────────────────────────────────
  auth: router({
    me: publicProcedure.query((opts) => opts.ctx.user),
    logout: publicProcedure.mutation(({ ctx }) => {
      const cookieOptions = getSessionCookieOptions(ctx.req);
      ctx.res.clearCookie(COOKIE_NAME, { ...cookieOptions, maxAge: -1 });
      return { success: true } as const;
    }),
    // Connexion locale
    localLogin: publicProcedure
      .input(z.object({ email: z.string().email(), password: z.string().min(1) }))
      .mutation(async ({ input, ctx }) => {
        const result = await loginLocalUser(input.email, input.password);
        // Stocker le token dans un cookie
        const cookieOptions = getSessionCookieOptions(ctx.req);
        ctx.res.cookie("veille_local_auth", result.token, {
          ...cookieOptions,
          maxAge: 7 * 24 * 60 * 60 * 1000,
        });
        return { success: true, user: result.user };
      }),
    localLogout: publicProcedure.mutation(({ ctx }) => {
      const cookieOptions = getSessionCookieOptions(ctx.req);
      ctx.res.clearCookie("veille_local_auth", { ...cookieOptions, maxAge: -1 });
      return { success: true };
    }),
  }),

  // ─── Veille ─────────────────────────────────────────────────────────────────
  veille: router({
    list: publicProcedure
      .input(
        z.object({
          typeVeille: z.enum(["reglementaire", "concurrentielle", "technologique", "generale"]).optional(),
          categorie: z.string().optional(),
          niveau: z.string().optional(),
          territoire: z.string().optional(),
          search: z.string().optional(),
          dateFrom: z.date().optional(),
          dateTo: z.date().optional(),
          page: z.number().int().positive().default(1),
          pageSize: z.number().int().positive().max(200).default(50),
        })
      )
      .query(async ({ input }) => {
        return getVeilleItems(input);
      }),

    filters: publicProcedure.query(async () => {
      return getVeilleDistinctValues();
    }),
  }),

  // ─── AAP ────────────────────────────────────────────────────────────────────
  aap: router({
    list: publicProcedure
      .input(
        z.object({
          categorie: z.enum(["Handicap", "PA", "Enfance", "Précarité", "Sanitaire", "Autre"]).optional(),
          region: z.string().optional(),
          departement: z.string().optional(),
          search: z.string().optional(),
          dateFrom: z.date().optional(),
          dateTo: z.date().optional(),
          clotureFrom: z.date().optional(),
          clotureTo: z.date().optional(),
          page: z.number().int().positive().default(1),
          pageSize: z.number().int().positive().max(200).default(50),
        })
      )
      .query(async ({ input }) => {
        return getAapItems(input);
      }),

    filters: publicProcedure.query(async () => {
      return getAapDistinctValues();
    }),
  }),

  // ─── Import ─────────────────────────────────────────────────────────────────
  import: router({
    run: adminProcedure
      .input(z.object({ type: z.enum(["veille", "aap", "all"]).default("all") }))
      .mutation(async ({ input }) => {
        const config = await getImportConfig();
        if (input.type === "all") return runFullImport();
        if (input.type === "veille") return { veille: await importVeille(config) };
        return { aap: await importAAP(config) };
      }),

    logs: adminProcedure
      .input(z.object({ page: z.number().int().positive().default(1), pageSize: z.number().int().positive().max(100).default(20) }))
      .query(async ({ input }) => {
        const allLogs = await getImportLogs(500);
        const start = (input.page - 1) * input.pageSize;
        const logs = allLogs.slice(start, start + input.pageSize);
        const stats = await getImportStats();
        return { logs, total: allLogs.length, stats };
      }),

    stats: publicProcedure.query(async () => {
      return getImportStats();
    }),
  }),

  // ─── Paramètres ─────────────────────────────────────────────────────────────
  settings: router({
    get: adminProcedure.query(async () => {
      const all = await getAllSettings();
      // Masquer les mots de passe
      const safe = { ...all };
      if (safe.ftp_password) safe.ftp_password = "••••••••";
      if (safe.onedrive_token) safe.onedrive_token = "••••••••";
      if (safe.sharepoint_token) safe.sharepoint_token = "••••••••";
      return safe;
    }),

    save: adminProcedure
      .input(
        z.object({
          source_type: z.enum(["local", "onedrive", "ftp", "sharepoint"]),
          veille_file_path: z.string().optional(),
          aap_file_path: z.string().optional(),
          ftp_host: z.string().optional(),
          ftp_port: z.string().optional(),
          ftp_user: z.string().optional(),
          ftp_password: z.string().optional(),
          ftp_secure: z.string().optional(),
          onedrive_token: z.string().optional(),
          sharepoint_site_url: z.string().optional(),
          sharepoint_token: z.string().optional(),
          auth_mode: z.enum(["local", "free"]).optional(),
          import_time: z.string().optional(),
        })
      )
      .mutation(async ({ input }) => {
        const toSave: Record<string, string> = {};
        for (const [k, v] of Object.entries(input)) {
          if (v !== undefined && v !== "••••••••") toSave[k] = v;
        }
        await setSettings(toSave);
        return { success: true };
      }),
  }),

  // ─── Utilisateurs locaux ─────────────────────────────────────────────────────
  users: router({
    list: adminProcedure.query(async () => {
      return getLocalUsers();
    }),

    create: adminProcedure
      .input(
        z.object({
          name: z.string().min(2).max(255),
          email: z.string().email(),
          password: z.string().min(8),
          role: z.enum(["admin", "user", "readonly"]).default("user"),
        })
      )
      .mutation(async ({ input }) => {
        const passwordHash = await hashPassword(input.password);
        await createLocalUser({
          name: input.name,
          email: input.email.toLowerCase(),
          passwordHash,
          role: input.role,
          isActive: true,
        });
        return { success: true };
      }),

    update: adminProcedure
      .input(
        z.object({
          id: z.number().int().positive(),
          name: z.string().min(2).max(255).optional(),
          email: z.string().email().optional(),
          password: z.string().min(8).optional(),
          role: z.enum(["admin", "user", "readonly"]).optional(),
          isActive: z.boolean().optional(),
        })
      )
      .mutation(async ({ input }) => {
        const { id, password, ...rest } = input;
        const data: Record<string, unknown> = { ...rest };
        if (password) data.passwordHash = await hashPassword(password);
        await updateLocalUser(id, data as Parameters<typeof updateLocalUser>[1]);
        return { success: true };
      }),

    delete: adminProcedure
      .input(z.object({ id: z.number().int().positive() }))
      .mutation(async ({ input }) => {
        await deleteLocalUser(input.id);
        return { success: true };
      }),

    ensureAdmin: publicProcedure.mutation(async () => {
      await ensureAdminExists();
      return { success: true };
    }),
  }),
});

export type AppRouter = typeof appRouter;