package plays

import (
	"fmt"
	"net/url"
	"sync"

	"gitea.konchin.com/ytshih/inp2025/game/server/wordle"
	"gitea.konchin.com/ytshih/inp2025/game/types"
	tea "github.com/charmbracelet/bubbletea"
	"github.com/gorilla/websocket"
	"github.com/vmihailenco/msgpack/v5"
)

type Game struct {
	*Base
	server url.URL

	mutex sync.RWMutex
	state types.WordleState

	input string
}

func (m *Game) GetState() {
	c, _, err := websocket.DefaultDialer.Dial(m.server.String(), nil)
	if err != nil {
		panic(fmt.Errorf("failed to dial, %w", err))
	}
	defer c.Close()

	for {
		_, b, err := c.ReadMessage()
		switch err.(type) {
		case nil:
			var state types.WordleState
			if err := msgpack.Unmarshal(b, &state); err != nil {
				panic(fmt.Errorf("failed to unmarshal state, %w", err))
			}

			m.mutex.Lock()
			m.state = state
			m.mutex.Unlock()
		case *websocket.CloseError:
			return
		default:
			panic(fmt.Errorf("failed to read message, %w", err))
		}
	}
}

func NewGame(base *Base, server url.URL) *Game {
	m := &Game{
		Base:   base,
		server: server,
		state:  types.NewWordleState(),
		input:  "",
	}

	go m.GetState()
	return m
}

func (m *Game) Init() tea.Cmd {
	return tea.Batch(tea.ClearScreen)
}

func (m *Game) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	if _, cmd := m.Base.Update(msg); cmd != nil {
		return m, cmd
	}

	switch msg := msg.(type) {
	case tea.KeyMsg:
		switch msg.Type {
		case tea.KeyBackspace:
			if len(m.input) > 0 {
				m.input = m.input[:len(m.input)-1]
			}
		case tea.KeyEnter:
			if len(m.input) == types.MaxLength {
				return m, tea.Quit
			}
		case tea.KeyRunes:
			if len(m.input) < types.MaxLength {
				m.input = m.input + string(msg.Runes)
			}
		}
	}

	return m, nil
}

func (m *Game) View() string {
	m.mutex.RLock()
	ret := m.state.View()
	m.mutex.RUnlock()
	return ret
}

func (m *Game) Next(queue *[]*tea.Program) error {
	if len(m.input) == types.MaxLength {
		b, err := msgpack.Marshal(wordle.Operation{
			Type:     wordle.OperationTypeGuess,
			Username: m.username,
		})
		if err != nil {
			return err
		}
		_, err = m.Base.client.R().
			SetBody(b).
			Post("/api/guess")
		if err != nil {
			return err
		}

		*queue = append(*queue,
			tea.NewProgram(NewGame(m.Base, m.server)))
	}
	return nil
}