import { TRPCError } from "@trpc/server";

import { createId, eq, like, sql } from "@homarr/db";
import { searchEngines } from "@homarr/db/schema/sqlite";
import { validation } from "@homarr/validation";

import { createTRPCRouter, protectedProcedure } from "../../trpc";

export const searchEngineRouter = createTRPCRouter({
  getPaginated: protectedProcedure.input(validation.common.paginated).query(async ({ input, ctx }) => {
    const whereQuery = input.search ? like(searchEngines.name, `%${input.search.trim()}%`) : undefined;
    const searchEngineCount = await ctx.db
      .select({
        count: sql<number>`count(*)`,
      })
      .from(searchEngines)
      .where(whereQuery);

    const dbSearachEngines = await ctx.db.query.searchEngines.findMany({
      limit: input.pageSize,
      offset: (input.page - 1) * input.pageSize,
      where: whereQuery,
    });

    return {
      items: dbSearachEngines,
      totalCount: searchEngineCount[0]?.count ?? 0,
    };
  }),
  byId: protectedProcedure.input(validation.common.byId).query(async ({ ctx, input }) => {
    const searchEngine = await ctx.db.query.searchEngines.findFirst({
      where: eq(searchEngines.id, input.id),
    });

    if (!searchEngine) {
      throw new TRPCError({
        code: "NOT_FOUND",
        message: "Search engine not found",
      });
    }

    return searchEngine;
  }),
  search: protectedProcedure.input(validation.common.search).query(async ({ ctx, input }) => {
    return await ctx.db.query.searchEngines.findMany({
      where: like(searchEngines.short, `${input.query.toLowerCase().trim()}%`),
      limit: input.limit,
    });
  }),
  create: protectedProcedure.input(validation.searchEngine.manage).mutation(async ({ ctx, input }) => {
    await ctx.db.insert(searchEngines).values({
      id: createId(),
      name: input.name,
      short: input.short.toLowerCase(),
      iconUrl: input.iconUrl,
      urlTemplate: input.urlTemplate,
      description: input.description,
    });
  }),
  update: protectedProcedure.input(validation.searchEngine.edit).mutation(async ({ ctx, input }) => {
    const searchEngine = await ctx.db.query.searchEngines.findFirst({
      where: eq(searchEngines.id, input.id),
    });

    if (!searchEngine) {
      throw new TRPCError({
        code: "NOT_FOUND",
        message: "Search engine not found",
      });
    }

    await ctx.db
      .update(searchEngines)
      .set({
        name: input.name,
        iconUrl: input.iconUrl,
        urlTemplate: input.urlTemplate,
        description: input.description,
      })
      .where(eq(searchEngines.id, input.id));
  }),
  delete: protectedProcedure.input(validation.common.byId).mutation(async ({ ctx, input }) => {
    await ctx.db.delete(searchEngines).where(eq(searchEngines.id, input.id));
  }),
});