import _ from 'lodash'
import { Type, type Static, type FastifyPluginCallbackTypebox } from '@fastify/type-provider-typebox'
import knex from '../../lib/knex.ts'

const resultRoutes: FastifyPluginCallbackTypebox = (fastify, _, done) => {
  fastify.route({
    url: '/',
    method: 'GET',
    async handler() {
      const financialYears = await knex('financialYear').select('*').orderBy('year', 'asc')

      return knex('transaction AS t')
        .select(
          't.accountNumber',
          'a.description',
          Object.fromEntries(
            financialYears.map((fy) => [
              fy.year,
              knex.raw(`SUM(CASE WHEN fy.year = ${fy.year} THEN t.amount ELSE 0 END)`),
            ]),
          ),
        )
        .sum('t.amount AS amount')
        .innerJoin('entry AS e', function () {
          this.on('t.entryId', '=', 'e.id')
        })
        .innerJoin('financialYear AS fy', 'fy.id', 'e.financialYearId')
        .innerJoin('account AS a', function () {
          this.on('t.accountNumber', '=', 'a.number')
        })
        .groupBy('t.accountNumber', 'a.description')
        .where('t.accountNumber', '>=', 3000)
        .orderBy('t.accountNumber')
    },
    // async handler() {
    //   const years = await knex('financialYear').select('*')

    //   const accounts = await knex('account').select('*')

    //   return Promise.all(
    //     years.map((year) =>
    //       knex('account AS a')
    //         .select('a.number', 'a.description')
    //         .sum('t.amount as amount')
    //         .innerJoin('transaction AS t', function () {
    //           this.on('t.accountNumber', '=', 'a.number')
    //         })
    //         .innerJoin('entry AS e', function () {
    //           this.on('t.entryId', '=', 'e.id')
    //         })
    //         .groupBy('a.number', 'a.description')
    //         .where('a.number', '>=', 3000)
    //         .where('e.financialYearId', year.id)
    //         .orderBy('a.number')
    //         .then((result) => ({
    //           startDate: year.startDate,
    //           endDate: year.endDate,
    //           result,
    //         })),
    //     ),
    //   ).then((years) => ({
    //     accounts,
    //     years,
    //   }))
    // },
  })

  fastify.route({
    url: '/:year',
    method: 'GET',
    schema: {
      params: Type.Object({
        year: Type.Number(),
      }),
    },
    async handler(req) {
      const year = await knex('financialYear').first('*').where('year', req.params.year)

      if (!year) return null

      return knex('transaction AS t')
        .select('t.accountNumber', 'a.description')
        .sum('t.amount as amount')
        .innerJoin('account AS a', function () {
          this.on('t.accountNumber', '=', 'a.number')
        })
        .innerJoin('entry AS e', function () {
          this.on('t.entryId', '=', 'e.id')
        })
        .groupBy('t.accountNumber', 'a.description')
        .where('t.accountNumber', '>=', 3000)
        .where('e.financialYearId', year.id)
        .orderBy('t.accountNumber')
    },
  })

  done()
}

export default resultRoutes