package editor

import (
	"testing"
	"time"

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

func TestOpenFileIntegration(t *testing.T) {
	// 1. Setup Logic
	// We need to re-create the setup logic to control the environment
	mockFS := mock.NewFileSystem()
	// Add a file
	filename := "/README.md"
	content := "Hello World"
	mockFS.AddFile(filename, []byte(content), time.Now())

	wp := pool.NewWorkerPool(4)
	wp.Start()

	// Initialize state manually
	state := NewState()
	TheState = state // Initialize global state
	state.Browser.CurrentPath = "/"
	_, _ = browser.NewBrowserManager(&state.Browser, wp, mockFS)

	// 2. Simulate File Tap
	// We need to trigger the file tap, which dispatches a ReadFileTask
	// and calls OpenFile(filename).
	
	// OpenFile sets filename and changes page
	OpenFile(filename)
	
	// Dispatch ReadFileTask
	task := pool.NewReadFileTask(filename, mockFS)
	wp.Dispatch(task)

	// 3. Process the Result
	// The logic loop would normally do this, we do it manually for the test
	res := <-wp.ResultChan()
	
	// Apply result
	if res.Success {
		if content, ok := res.Data.([]byte); ok {
			state.Editor.Buffer = string(content)
		}
	}

	// 4. Assert
	if state.Editor.Buffer != content {
		t.Errorf("Expected content %q, got %q", content, state.Editor.Buffer)
	}
}