import { NextApiRequest, NextApiResponse } from 'next'

import { brief as briefTemplate } from '../../../lib/templates'
import renderer from '../../../lib/renderer'
import * as store from '../../../lib/store'
import { IDocProps } from '../../../interfaces/IDocProps'

const TEMPLATES: { [key: string]: (options: IDocProps) => string } = {
  brief: briefTemplate,
}

const handler = async (req: NextApiRequest, res: NextApiResponse) => {
  if (req.method !== 'POST') {
    res.status(405).json({ statusCode: 405, message: 'Method Not Allowed' })
    return
  }

  try {
    const {
      query: { template: templateArg },
    } = req
    const options = req.body
    const templateName = Array.isArray(templateArg) ? templateArg[0] : templateArg
    const template = TEMPLATES[templateName]

    if (!template) {
      res.status(404).json({ statusCode: 404, message: 'Template not specified availabe' })
      return
    }

    const texDoc = template(options)
    const id = await renderer(texDoc)
    const storeData = Object.assign({}, options, {
      id,
      created: new Date().toISOString(),
      template: templateName,
    })
    await store.add(storeData)
    res.status(200).json({ id: id })
  } catch (err) {
    console.error('Error:', err, 'for', req.url)
    res.status(500).json({ error: err.toString() })
  }
}

export default handler