package internal

import (
	"testing"

	tea "charm.land/bubbletea/v2"
)

// TestEditTitleViaRealKeyPress 用真实 tea.KeyPressMsg 走完整 Update 流程，
// 验证运行时按键是否能真正写入编辑缓冲（用户反馈"界面未能输入名称"）。
func TestEditTitleViaRealKeyPress(t *testing.T) {
	m := NewModel()
	m.history.Projects = []*ProjectDir{
		{DirShort: "test", Sessions: []*Session{
			{ID: "s1", AISummary: "旧标题"},
		}},
	}
	m.history.DirCursor = 2
	m.history.SessCursor = 0
	m.history.Loaded = true

	send := func(msg tea.Msg) tea.Model {
		var cmd tea.Cmd
		var model tea.Model = m
		model, cmd = m.Update(msg)
		_ = cmd
		return model
	}

	// 1. 真实按键 'e' 进入编辑模式（Code+Text 同 ultraviolet 实测构造）
	send(tea.KeyPressMsg{Code: 'e', Text: "e"})
	if !m.editTitleMode {
		t.Fatal("真实 KeyPressMsg(e) 应进入编辑模式")
	}
	if m.editTitleBuf != "旧标题" {
		t.Fatalf("编辑缓冲应预填旧标题, got %q", m.editTitleBuf)
	}

	// 2. 真实按键 'a'（ASCII 字符）
	send(tea.KeyPressMsg{Code: 'a', Text: "a"})
	if m.editTitleBuf != "旧标题a" {
		t.Fatalf("真实按键 a 应追加, got %q", m.editTitleBuf)
	}

	// 3. 真实空格键（Code=KeySpace, Text=" "）
	send(tea.KeyPressMsg{Code: tea.KeySpace, Text: " "})
	if m.editTitleBuf != "旧标题a " {
		t.Fatalf("空格应插入, got %q", m.editTitleBuf)
	}

	// 4. 真实中文输入（多 rune，Code=KeyExtended）
	send(tea.KeyPressMsg{Code: tea.KeyExtended, Text: "新"})
	if m.editTitleBuf != "旧标题a 新" {
		t.Fatalf("中文应追加, got %q", m.editTitleBuf)
	}

	// 5. 回车确认
	send(tea.KeyPressMsg{Code: tea.KeyEnter, Text: ""})
	if m.editTitleMode {
		t.Fatal("回车应退出编辑模式")
	}
	if m.launched != "rename: 旧标题a 新" {
		t.Fatalf("确认后 launched 应记录改名, got %q", m.launched)
	}
}