local M = {}

local cache = require('cp.cache')
local constants = require('cp.constants')
local logger = require('cp.log')
local state = require('cp.state')

local STATUS_MESSAGES = {
  checking_login = 'Checking existing session...',
  logging_in = 'Logging in...',
  installing_browser = 'Installing browser...',
}

function M.login(platform)
  platform = platform or state.get_platform()
  if not platform then
    logger.log(
      'No platform specified. Usage: :CP <platform> login',
      { level = vim.log.levels.ERROR }
    )
    return
  end

  local display = constants.PLATFORM_DISPLAY_NAMES[platform] or platform

  vim.ui.input({ prompt = platform .. ' username: ' }, function(username)
    if not username or username == '' then
      logger.log('Cancelled', { level = vim.log.levels.WARN })
      return
    end
    vim.fn.inputsave()
    local password = vim.fn.inputsecret(platform .. ' password: ')
    vim.fn.inputrestore()
    if not password or password == '' then
      logger.log('Cancelled', { level = vim.log.levels.WARN })
      return
    end

    cache.load()
    local existing = cache.get_credentials(platform) or {}
    local credentials = {
      username = username,
      password = password,
    }
    if existing.token then
      credentials.token = existing.token
    end

    local scraper = require('cp.scraper')
    scraper.login(platform, credentials, function(ev)
      vim.schedule(function()
        local msg = STATUS_MESSAGES[ev.status] or ev.status
        logger.log(display .. ': ' .. msg, { level = vim.log.levels.INFO, override = true })
      end)
    end, function(result)
      vim.schedule(function()
        if result.success then
          logger.log(
            display .. ' login successful',
            { level = vim.log.levels.INFO, override = true }
          )
        else
          local err = result.error or 'unknown error'
          logger.log(display .. ' login failed: ' .. err, { level = vim.log.levels.ERROR })
        end
      end)
    end)
  end)
end

function M.logout(platform)
  platform = platform or state.get_platform()
  if not platform then
    logger.log(
      'No platform specified. Usage: :CP <platform> logout',
      { level = vim.log.levels.ERROR }
    )
    return
  end
  cache.load()
  cache.clear_credentials(platform)
  logger.log(platform .. ' credentials cleared', { level = vim.log.levels.INFO, override = true })
end

return M