var fs = require('fs')
var path = require('path')
var pull = require('pull-stream')
var File = require('pull-file')
var Split = require('pull-split')
var common = require('./common')

var dayMax = 0
var weekMax = 0
var monthMax = 0

var series = process.argv[2]
if (!series) throw new TypeError('Missing series argument')

if (series === 'day') pull(
  File(path.join(__dirname, 'day.jsonp')),
  Split(),
  pull.filter(Boolean),
  pull.map(JSON.parse),
  pull.through(function (day) {
    var count = day.ids.length
    if (count > dayMax) dayMax = count
  }),
  pull.map('ids'),
  pull.flatten(),
  pull.unique(),
  pull.collect(function (err, ids) {
    if (err) throw err
    fs.writeFileSync(path.join(__dirname, 'ids-colors.json'), JSON.stringify({
      ids: ids,
      colors: common.computeIdColors(ids)
    }))
    var data = JSON.stringify({
      max: dayMax
    })
    fs.writeFileSync(path.join(__dirname, 'day.json'), data)
  })
)

else if (series === 'week') pull(
  File(path.join(__dirname, 'week.jsonp')),
  Split(),
  pull.filter(Boolean),
  pull.map(JSON.parse),
  pull.through(function (week) {
    var count = week.ids.length
    if (count > weekMax) weekMax = count
  }),
  pull.map('ids'),
  pull.flatten(),
  pull.unique(),
  pull.collect(function (err, ids) {
    if (err) throw err
    var data = JSON.stringify({
      max: weekMax
    })
    fs.writeFileSync(path.join(__dirname, 'week.json'), data)
  })
)

else if (series === 'month') pull(
  File(path.join(__dirname, 'month.jsonp')),
  Split(),
  pull.filter(Boolean),
  pull.map(JSON.parse),
  pull.through(function (month) {
    var count = month.ids.length
    if (count > monthMax) monthMax = count
  }),
  pull.map('ids'),
  pull.flatten(),
  pull.unique(),
  pull.collect(function (err, ids) {
    if (err) throw err
    var data = JSON.stringify({
      max: monthMax
    })
    fs.writeFileSync(path.join(__dirname, 'month.json'), data)
  })
)