package git_tm

import (
	"context"
	"fmt"
	"log/slog"
	"os"
	"time"

	"github.com/iomodo/staff/git"
	"github.com/iomodo/staff/tm"
)

// Example demonstrates how to use the GitTaskManager
func Example() {
	// Create logger
	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: slog.LevelInfo}))

	// Initialize git interface
	gitInterface := git.DefaultGit("./tasks-repo")

	// Create task manager
	taskManager := NewGitTaskManagerWithLogger(gitInterface, "./tasks-repo", logger)

	// Create a new task
	ctx := context.Background()
	dueDate := time.Now().AddDate(0, 0, 7) // Due in 7 days

	createReq := &tm.TaskCreateRequest{
		Title:       "Implement user authentication",
		Description: "Add login/logout functionality with JWT tokens",
		OwnerID:     "john.doe",
		Priority:    tm.PriorityHigh,
		DueDate:     &dueDate,
	}

	task, err := taskManager.CreateTask(ctx, createReq)
	if err != nil {
		logger.Error("Failed to create task", slog.String("error", err.Error()))
		os.Exit(1)
	}

	logger.Info("Created task", slog.String("id", task.ID))

	// Get the task
	retrievedTask, err := taskManager.GetTask(ctx, task.ID)
	if err != nil {
		logger.Error("Failed to get task", slog.String("error", err.Error()))
		os.Exit(1)
	}

	logger.Info("Retrieved task", slog.String("id", retrievedTask.ID), slog.String("title", retrievedTask.Title))

	// Start the task
	startedTask, err := taskManager.StartTask(ctx, task.ID)
	if err != nil {
		logger.Error("Failed to start task", slog.String("error", err.Error()))
		os.Exit(1)
	}

	logger.Info("Started task", slog.String("id", startedTask.ID), slog.String("status", string(startedTask.Status)))

	// List all tasks
	taskList, err := taskManager.ListTasks(ctx, nil, 0, 10)
	if err != nil {
		logger.Error("Failed to list tasks", slog.String("error", err.Error()))
		os.Exit(1)
	}

	logger.Info("Total tasks", slog.Int("count", taskList.TotalCount))
	for _, t := range taskList.Tasks {
		logger.Info("Task", slog.String("id", t.ID), slog.String("title", t.Title), slog.String("status", string(t.Status)))
	}

	// Complete the task
	completedTask, err := taskManager.CompleteTask(ctx, task.ID)
	if err != nil {
		logger.Error("Failed to complete task", slog.String("error", err.Error()))
		os.Exit(1)
	}

	logger.Info("Completed task", slog.String("id", completedTask.ID), slog.String("completed_at", completedTask.CompletedAt.Format(time.RFC3339)))
}

// ExampleTaskFile shows the format of a task file
func ExampleTaskFile() {
	fmt.Print(`Example task file (tasks/task-1704067200-abc123.md):

---
id: task-1704067200-abc123
title: Implement user authentication
description: Add login/logout functionality with JWT tokens
owner_id: john.doe
owner_name: John Doe
status: in_progress
priority: high
created_at: 2024-01-01T10:00:00Z
updated_at: 2024-01-01T15:30:00Z
due_date: 2024-01-08T17:00:00Z
completed_at: null
archived_at: null
---

# Task Description

Add login/logout functionality with JWT tokens for the web application.

## Requirements

- User registration and login forms
- JWT token generation and validation
- Password hashing with bcrypt
- Session management
- Logout functionality

## Notes

- Consider using bcrypt for password hashing
- Implement refresh token mechanism
- Add rate limiting for login attempts
`)
}