local mp = require("mp")
local msg = require("mp.msg")
local utils = require("mp.utils")

local list = require("src.list")
local auth = require("src.auth")
local api = require("src.api")
local cache = require("src.cache")
local tree = require("src.utils.tree")

---@type auth
local jf = nil

-- keeps track of all the info available
local state = {
  ---@type tree<cache> the currently selected node in the tree
  pos = nil,
  ---@type tree<cache> the head of the tree
  tree = nil,

  -- when we're navigating (in the middle of loading) we shouldn't allow more
  -- navigations
  navigating = false
}

-- create the main list
local l = list:new()
l:update()
local timer = l:set_fade_animation(0.02, "Authenticating")

coroutine.wrap(function()
  -- attempt to authenticate with the server
  jf = auth:new(
    "http://192.168.50.159:8096",
    "zachary",
    "qwerty1"
  )
  if not jf.available then
    timer:kill()
    l:log({
      style = [[{\c&H0000ff&}]],
      ass = string.format(
        "The jellyfin server at '%s' is not available",
        jf.url
      )
    })
    mp.add_timeout(5, function()
      l:close()
    end)
    return
  end

  -- we've connected kill the auth animation and clear the list
  timer:kill()
  l:set()

  if not jf.authenticated then
    l:log({
      style = [[{\c&H0000ff&}]],
      ass = "Failed to authenticate with jellyfin server. Check your credentials.",
    })
    mp.add_timeout(5, function()
      l:close()
    end)
    return
  end

  msg.trace("Welcome to jellyfin. Everything's working so far.")
  -- show the first list
  state.tree = tree:new(cache:new(nil, function(self)
    return api.async_request(self, "head", l, jf, "/Items/", { method = "GET" })
  end))
  state.pos = state.tree

  l:set(api.items_to_list(state.pos.data:get().items))
  l.selected = 1
  l:update()
end)()

-- add keys
l:addkey("k", "up", function()
  if state.navigating then
    return
  end
  l:up()
end)
l:addkey("j", "down", function()
  if state.navigating then
    return
  end
  l:down()
end)
l:addkey("l", "enter", function()
  if state.navigating then
    return
  end
  state.navigating = true
  coroutine.resume(coroutine.create(function()
    if #state.pos.data:get().items < 1 then
      state.navigating = false
      return
    end

    local cur_item = state.pos.data:get().items[l.selected]
    if cur_item.MediaType == "Video" then
      print(cur_item.Name)
      -- TODO: handle playing videos
      state.navigating = false
      return
    end

    local new_pos = nil
    for _, child in ipairs(state.pos.children) do
      if child.data:get().id == cur_item.Name then
        new_pos = child
        break
      end
    end

    if not new_pos then
      new_pos = tree:new(cache:new(nil, function(self)
        return api.async_request(self, cur_item.Name, l, jf, "/Items/", {
          method = "GET",
          paramaters = {
            ["parentId"] = cur_item.Id,
            ["sortBy"] = "SortName"
          }
        })
      end))
      state.pos:addchild(new_pos)
    end

    state.pos.data.data.selected = l.selected
    state.pos = new_pos
    l:set(api.items_to_list(state.pos.data:get().items))
    l.selected = state.pos.data:get().selected
    l:update()
    state.navigating = false
  end))
end)
l:addkey("h", "leave", function()
  if state.navigating then
    return
  end
  state.navigating = true

  if not state.pos.parent then
    state.navigating = false
    return
  end

  state.pos.data.data.selected = l.selected
  state.pos = state.pos.parent

  coroutine.resume(coroutine.create(function()
    l:set(api.items_to_list(state.pos.data:get().items))
    l.selected = state.pos.data:get().selected
    l:update()
    state.navigating = false
  end))
end)
l:addkey("esc", "close", function() l:close() end)
mp.add_key_binding("Ctrl+j", "open", function()
  coroutine.resume(coroutine.create(function()
    if not l.open then
      if not jf:ping() then
        print("hi")
      end
      l:update()
    end
  end))
end)