import _ from 'lodash'
import * as z from 'zod'
import type { FastifyPluginCallbackZod } from 'fastify-type-provider-zod'
import { sql } from 'kysely'

const resultRoutes: FastifyPluginCallbackZod = (fastify, _, done) => {
  const { db } = fastify

  fastify.route({
    url: '/',
    method: 'GET',
    async handler() {
      const financialYears = await db.selectFrom('financialYear').selectAll().orderBy('year', 'asc').execute()

      return db
        .selectFrom('transaction as t')
        .innerJoin('entry as e', 't.entryId', 'e.id')
        .innerJoin('financialYear as fy', 'fy.id', 'e.financialYearId')
        .innerJoin('account as a', 't.accountNumber', 'a.number')
        .select(['t.accountNumber', 'a.description'])
        .select(
          financialYears.map((fy) =>
            sql`SUM(CASE WHEN fy.year = ${fy.year} THEN t.amount ELSE 0 END)`.as(fy.year.toString()),
          ),
        )
        .groupBy(['t.accountNumber', 'a.description'])
        .where('t.accountNumber', '>=', 3000)
        .orderBy('t.accountNumber')
        .execute()
    },
  })

  fastify.route({
    url: '/:year',
    method: 'GET',
    schema: {
      params: z.object({
        year: z.coerce.number(),
      }),
    },
    async handler(request) {
      return (
        db
          .selectFrom('transaction as t')
          .innerJoin('entry as e', 't.entryId', 'e.id')
          .innerJoin('financialYear as fy', 'fy.id', 'e.financialYearId')
          .innerJoin('account as a', 't.accountNumber', 'a.number')
          .select(['t.accountNumber', 'a.description', (eb) => eb.fn.sum('t.amount').as('amount')])
          // .sum('t.amount AS amount')
          .groupBy(['t.accountNumber', 'a.description'])
          .where('t.accountNumber', '>=', 3000)
          .where('year', '=', request.params.year)
          .orderBy('t.accountNumber')
          .execute()
      )
    },
  })

  done()
}

export default resultRoutes