local db = require("lapis.db")
local to_json = require("lapis.util").to_json
local autoload = require("lapis.util").autoload
local preload = require("lapis.db.model").preload

local models = autoload("models")


local function Releasehandler(self)
  local release_id = self.params.release

  local release = models.releases:find({ id = release_id })
  if not release then
    self:write({"Not Found", status = 404})
    return
  end

  local hidden_fields = {
      "unique_name",
      "created_at",
      "updated_at"
    }

  for i, field in ipairs(hidden_fields) do
    release[field] = nil
  end

  local tracks = db.query([[
        SELECT track.name AS track_name, track.id, release.name AS release_name
        FROM track_releases
        INNER JOIN
            tracks AS track ON (track_releases.track = track.id)
            INNER JOIN
                track_releases AS track_release ON (track_release.track = track.id)
                INNER JOIN
                    releases AS release ON (track_release.release = release.id)
        WHERE track_releases.release = ?
  ]], release["id"])

  release["tracks"] = tracks

  for i, track in ipairs(tracks) do
    local airtimes = db.query([[
            SELECT airtime
            FROM airtimes
            WHERE track = ?
    ]], track["id"])

    release["tracks"][i]["airtimes"] = {}
    for j, airtime in ipairs(airtimes) do
        table.insert(release["tracks"][i]["airtimes"], airtime['airtime'])
    end
  end

  return { json = release }

end

return Releasehandler