import { INestApplication, Injectable, Logger } from '@nestjs/common';
import { z } from 'zod';
import { TrpcService } from '@server/trpc/trpc.service';
import * as trpcExpress from '@trpc/server/adapters/express';
import { TRPCError } from '@trpc/server';
import { PrismaService } from '@server/prisma/prisma.service';
import { statusMap } from '@server/constants';
import { ConfigService } from '@nestjs/config';
import { ConfigurationType } from '@server/configuration';

@Injectable()
export class TrpcRouter {
  constructor(
    private readonly trpcService: TrpcService,
    private readonly prismaService: PrismaService,
    private readonly configService: ConfigService,
  ) {}

  private readonly logger = new Logger(this.constructor.name);

  accountRouter = this.trpcService.router({
    list: this.trpcService.protectedProcedure
      .input(
        z.object({
          limit: z.number().min(1).max(500).nullish(),
          cursor: z.string().nullish(),
        }),
      )
      .query(async ({ input }) => {
        const limit = input.limit ?? 500;
        const { cursor } = input;

        const items = await this.prismaService.account.findMany({
          take: limit + 1,
          where: {},
          select: {
            id: true,
            name: true,
            status: true,
            createdAt: true,
            updatedAt: true,
            token: false,
          },
          cursor: cursor
            ? {
                id: cursor,
              }
            : undefined,
          orderBy: {
            createdAt: 'asc',
          },
        });
        let nextCursor: typeof cursor | undefined = undefined;
        if (items.length > limit) {
          // Remove the last item and use it as next cursor

          // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
          const nextItem = items.pop()!;
          nextCursor = nextItem.id;
        }

        const disabledAccounts = this.trpcService.getBlockedAccountIds();
        return {
          blocks: disabledAccounts,
          items,
          nextCursor,
        };
      }),
    byId: this.trpcService.protectedProcedure
      .input(z.string())
      .query(async ({ input: id }) => {
        const account = await this.prismaService.account.findUnique({
          where: { id },
        });
        if (!account) {
          throw new TRPCError({
            code: 'BAD_REQUEST',
            message: `No account with id '${id}'`,
          });
        }
        return account;
      }),
    add: this.trpcService.protectedProcedure
      .input(
        z.object({
          id: z.string().min(1).max(32),
          token: z.string().min(1),
          name: z.string().min(1),
          status: z.number().default(statusMap.ENABLE),
        }),
      )
      .mutation(async ({ input }) => {
        const { id, ...data } = input;
        const account = await this.prismaService.account.upsert({
          where: {
            id,
          },
          update: data,
          create: input,
        });

        return account;
      }),
    edit: this.trpcService.protectedProcedure
      .input(
        z.object({
          id: z.string(),
          data: z.object({
            token: z.string().min(1).optional(),
            name: z.string().min(1).optional(),
            status: z.number().optional(),
          }),
        }),
      )
      .mutation(async ({ input }) => {
        const { id, data } = input;
        const account = await this.prismaService.account.update({
          where: { id },
          data,
        });
        return account;
      }),
    delete: this.trpcService.protectedProcedure
      .input(z.string())
      .mutation(async ({ input: id }) => {
        await this.prismaService.account.delete({ where: { id } });
        return id;
      }),
  });

  feedRouter = this.trpcService.router({
    list: this.trpcService.protectedProcedure
      .input(
        z.object({
          limit: z.number().min(1).max(500).nullish(),
          cursor: z.string().nullish(),
        }),
      )
      .query(async ({ input }) => {
        const limit = input.limit ?? 500;
        const { cursor } = input;

        const items = await this.prismaService.feed.findMany({
          take: limit + 1,
          where: {},
          cursor: cursor
            ? {
                id: cursor,
              }
            : undefined,
          orderBy: {
            createdAt: 'asc',
          },
        });
        let nextCursor: typeof cursor | undefined = undefined;
        if (items.length > limit) {
          // Remove the last item and use it as next cursor

          // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
          const nextItem = items.pop()!;
          nextCursor = nextItem.id;
        }

        return {
          items: items,
          nextCursor,
        };
      }),
    byId: this.trpcService.protectedProcedure
      .input(z.string())
      .query(async ({ input: id }) => {
        const feed = await this.prismaService.feed.findUnique({
          where: { id },
        });
        if (!feed) {
          throw new TRPCError({
            code: 'BAD_REQUEST',
            message: `No feed with id '${id}'`,
          });
        }
        return feed;
      }),
    add: this.trpcService.protectedProcedure
      .input(
        z.object({
          id: z.string(),
          mpName: z.string(),
          mpCover: z.string(),
          mpIntro: z.string(),
          syncTime: z
            .number()
            .optional()
            .default(Math.floor(Date.now() / 1e3)),
          updateTime: z.number(),
          status: z.number().default(statusMap.ENABLE),
        }),
      )
      .mutation(async ({ input }) => {
        const { id, ...data } = input;
        const feed = await this.prismaService.feed.upsert({
          where: {
            id,
          },
          update: data,
          create: input,
        });

        return feed;
      }),
    edit: this.trpcService.protectedProcedure
      .input(
        z.object({
          id: z.string(),
          data: z.object({
            mpName: z.string().optional(),
            mpCover: z.string().optional(),
            mpIntro: z.string().optional(),
            syncTime: z.number().optional(),
            updateTime: z.number().optional(),
            status: z.number().optional(),
          }),
        }),
      )
      .mutation(async ({ input }) => {
        const { id, data } = input;
        const feed = await this.prismaService.feed.update({
          where: { id },
          data,
        });
        return feed;
      }),
    delete: this.trpcService.protectedProcedure
      .input(z.string())
      .mutation(async ({ input: id }) => {
        await this.prismaService.feed.delete({ where: { id } });
        return id;
      }),

    refreshArticles: this.trpcService.protectedProcedure
      .input(z.string())
      .mutation(async ({ input: mpId }) => {
        await this.trpcService.refreshMpArticlesAndUpdateFeed(mpId);
      }),
  });

  articleRouter = this.trpcService.router({
    list: this.trpcService.protectedProcedure
      .input(
        z.object({
          limit: z.number().min(1).max(500).nullish(),
          cursor: z.string().nullish(),
          mpId: z.string().nullish(),
        }),
      )
      .query(async ({ input }) => {
        const limit = input.limit ?? 500;
        const { cursor, mpId } = input;

        const items = await this.prismaService.article.findMany({
          orderBy: [
            {
              publishTime: 'desc',
            },
          ],
          take: limit + 1,
          where: mpId ? { mpId } : undefined,
          cursor: cursor
            ? {
                id: cursor,
              }
            : undefined,
        });
        let nextCursor: typeof cursor | undefined = undefined;
        if (items.length > limit) {
          // Remove the last item and use it as next cursor

          // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
          const nextItem = items.pop()!;
          nextCursor = nextItem.id;
        }

        return {
          items,
          nextCursor,
        };
      }),
    byId: this.trpcService.protectedProcedure
      .input(z.string())
      .query(async ({ input: id }) => {
        const article = await this.prismaService.article.findUnique({
          where: { id },
        });
        if (!article) {
          throw new TRPCError({
            code: 'BAD_REQUEST',
            message: `No article with id '${id}'`,
          });
        }
        return article;
      }),

    add: this.trpcService.protectedProcedure
      .input(
        z.object({
          id: z.string(),
          mpId: z.string(),
          title: z.string(),
          picUrl: z.string().optional().default(''),
          publishTime: z.number(),
        }),
      )
      .mutation(async ({ input }) => {
        const { id, ...data } = input;
        const article = await this.prismaService.article.upsert({
          where: {
            id,
          },
          update: data,
          create: input,
        });

        return article;
      }),
    delete: this.trpcService.protectedProcedure
      .input(z.string())
      .mutation(async ({ input: id }) => {
        await this.prismaService.article.delete({ where: { id } });
        return id;
      }),
  });

  platformRouter = this.trpcService.router({
    getMpArticles: this.trpcService.protectedProcedure
      .input(
        z.object({
          mpId: z.string(),
        }),
      )
      .mutation(async ({ input: { mpId } }) => {
        try {
          const results = await this.trpcService.getMpArticles(mpId);
          return results;
        } catch (err: any) {
          this.logger.log('getMpArticles err: ', err);
          throw new TRPCError({
            code: 'INTERNAL_SERVER_ERROR',
            message: err.response?.data?.message || err.message,
            cause: err.stack,
          });
        }
      }),
    getMpInfo: this.trpcService.protectedProcedure
      .input(
        z.object({
          wxsLink: z
            .string()
            .refine((v) => v.startsWith('https://mp.weixin.qq.com/s/')),
        }),
      )
      .mutation(async ({ input: { wxsLink: url } }) => {
        try {
          const results = await this.trpcService.getMpInfo(url);
          return results;
        } catch (err: any) {
          this.logger.log('getMpInfo err: ', err);
          throw new TRPCError({
            code: 'INTERNAL_SERVER_ERROR',
            message: err.response?.data?.message || err.message,
            cause: err.stack,
          });
        }
      }),

    createLoginUrl: this.trpcService.protectedProcedure.mutation(async () => {
      return this.trpcService.createLoginUrl();
    }),
    getLoginResult: this.trpcService.protectedProcedure
      .input(
        z.object({
          id: z.string(),
        }),
      )
      .query(async ({ input }) => {
        return this.trpcService.getLoginResult(input.id);
      }),
  });

  appRouter = this.trpcService.router({
    feed: this.feedRouter,
    account: this.accountRouter,
    article: this.articleRouter,
    platform: this.platformRouter,
  });

  async applyMiddleware(app: INestApplication) {
    app.use(
      `/trpc`,
      trpcExpress.createExpressMiddleware({
        router: this.appRouter,
        createContext: ({ req }) => {
          const authCode =
            this.configService.get<ConfigurationType['auth']>('auth')!.code;

          if (authCode && req.headers.authorization !== authCode) {
            return {
              errorMsg: 'authCode不正确！',
            };
          }
          return {
            errorMsg: null,
          };
        },
        middleware: (req, res, next) => {
          next();
        },
      }),
    );
  }
}

export type AppRouter = TrpcRouter[`appRouter`];