local mp = require('mp')

-- TODO: Move plugins (and opts) table to seperate file so that we can auto update without
-- messing with the user's configs
local plugins = { -- the  plugins you want to load
  -- link to repo                 file         dest dir
  -- { 'https://git.squi.bid/eat-it', 'eatit.lua', 'scripts' }, -- this is an example uncommenting it (and updating) will overwrite your config
}

-- options for eat it
local opts = {
  logging = { -- options for logging
    log = true,
    logdate = '[%H:%M:%S]:',
    logfile = '~~/eatit.log',
  },
  dl = { -- options for dealing with the git repos
    dir = '/tmp/mpv-eatit',
    powerwash = false, -- if true the tmp dir gets deleted after mpv closes
  }
}

local function tablelength(T)
  local count = 0
  for _ in pairs(T) do count = count + 1 end
  return count
end

local function logwrite(string)
  if opts.logging.log then
    io.write(os.date(opts.logging.logdate) .. ' ' .. string .. '\n')
  end
end

local function getgit()
  os.execute('mkdir -p ' .. opts.dl.dir)

  logwrite('Starting Download...')
  for i in pairs(plugins) do
    logwrite('downloading ' .. plugins[i][1])

    -- construct the git cmd
    local cmd = 'git -C ' .. opts.dl.dir .. ' clone ' .. plugins[i][1]

    -- run the command and get the result for logging
    local run = io.popen(cmd)
    -- BUG: logwriting the git command doens't actually log the output
    -- (commented out for now)
    -- logwrite(run:read('*a'))
    run:close()

    -- get the file's dir
    local pluginfile = opts.dl.dir .. '/' ..
      string.match(plugins[i][1], '/([^/]+)$') ..
      '/' .. plugins[i][2]

    -- get the dest dir
    local destfile = mp.command_native({'expand-path', '~~/'}) ..
      '/' .. plugins[i][3] ..
      '/' .. plugins[i][2]

    -- copy the file contents over to the desired location
    local infile = io.open(pluginfile, 'r')
    local outfile = io.open(destfile, 'w')
    outfile:write(infile:read('*a'))
    outfile:close()
    infile:close()
  end
end

local function init()
  if opts.logging.log then -- log if asked to
    -- get our logfile's full path
    local fn = mp.command_native({'expand-path', opts.logging.logfile})

    os.remove(fn) -- remove logfile so that we start fresh
    f = io.open(fn, 'a') -- open file buffer
    io.output(f) -- set it as default
  end

  logwrite('# of plugins defined in table: ' .. tablelength(plugins))
  getgit()

  -- closing/removing everything
  if opts.dl.powerwash == true then
    logwrite('powerwashing the tmp dir (' .. opts.dl.dir .. ')')
    os.execute('rm -rf ' .. opts.dl.dir)
  end
  if opts.logging.log then
    io.close(f)
  end
end

mp.add_key_binding('U', 'UpdatePlugins', init)