package editor

import (
	"testing"
	"time"

	"pad/internal/io/pool/mock"
)

func TestOpenFileIntegration(t *testing.T) {
	// 1. Setup Logic
	mockFS := mock.NewFileSystem()
	filename := "/README.md"
	content := "Hello World"
	mockFS.AddFile(filename, []byte(content), time.Now())

	l := NewLogic(mockFS, "/", func(string) {})
	go l.Run()
	defer l.Shutdown()

	// Drain frameChan to prevent deadlocks
	go func() {
		for range l.FrameChan() {
		}
	}()

	// Initialize global state on the owner
	withState(t, l, func(st *State) {
		TheState = st
	})

	// 2. Open File
	// OpenFile dispatches the task to openFileChan, which Run() will consume
	OpenFile(filename)

	// 3. Process the Result
	// We wait for the state to update, which happens when ReadChunkTask completes
	success := false
	for i := 0; i < 20; i++ {
		v, ok := l.Inspect(func(st *State) any { return st.Editor.GetBuffer() })
		if ok && v.(string) == content {
			success = true
			break
		}
		time.Sleep(100 * time.Millisecond)
	}

	// 4. Assert
	if !success {
		got, _ := l.Inspect(func(st *State) any { return st.Editor.Buffer })
		t.Errorf("Expected content %q, got %q", content, got)
	}
}