#!/usr/bin/env python3
"""
Gerenciador de tarefas para o skill project-tasks.
"""
import json
import argparse
from pathlib import Path
from datetime import datetime

TASKS_FILE = Path.home() / ".tasks" / "tasks.json"

def load_tasks():
    if not TASKS_FILE.exists():
        TASKS_FILE.parent.mkdir(parents=True, exist_ok=True)
        return {"tasks": [], "next_id": 1}
    return json.loads(TASKS_FILE.read_text())

def save_tasks(data):
    TASKS_FILE.write_text(json.dumps(data, indent=2))

def add_task(title, priority="medium", deadline=None, project=None):
    data = load_tasks()
    task = {
        "id": data["next_id"],
        "title": title,
        "priority": priority,
        "status": "pending",
        "deadline": deadline,
        "project": project,
        "created": datetime.now().isoformat()
    }
    data["tasks"].append(task)
    data["next_id"] += 1
    save_tasks(data)
    print(f"✅ Tarefa #{task['id']} criada: {title}")

def list_tasks(project=None, status=None):
    data = load_tasks()
    tasks = data["tasks"]
    
    if project:
        tasks = [t for t in tasks if t.get("project") == project]
    if status:
        tasks = [t for t in tasks if t["status"] == status]
    
    if not tasks:
        print("Nenhuma tarefa encontrada.")
        return
    
    for t in tasks:
        emoji = "✅" if t["status"] == "done" else "⏳" if t["status"] == "in_progress" else "📋"
        priority = {"high": "🔴", "medium": "🟡", "low": "🟢"}.get(t["priority"], "")
        print(f"{emoji} #{t['id']} {priority} {t['title']}")
        if t.get("deadline"):
            print(f"   📅 {t['deadline']}")

def complete_task(task_id):
    data = load_tasks()
    for t in data["tasks"]:
        if t["id"] == task_id:
            t["status"] = "done"
            save_tasks(data)
            print(f"✅ Tarefa #{task_id} concluída!")
            return
    print(f"❌ Tarefa #{task_id} não encontrada.")

if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    subparsers = parser.add_subparsers(dest="command")
    
    # Add
    add_parser = subparsers.add_parser("add")
    add_parser.add_argument("title")
    add_parser.add_argument("--priority", default="medium")
    add_parser.add_argument("--deadline")
    add_parser.add_argument("--project")
    
    # List
    list_parser = subparsers.add_parser("list")
    list_parser.add_argument("--project")
    list_parser.add_argument("--status")
    
    # Complete
    complete_parser = subparsers.add_parser("complete")
    complete_parser.add_argument("id", type=int)
    
    args = parser.parse_args()
    
    if args.command == "add":
        add_task(args.title, args.priority, args.deadline, args.project)
    elif args.command == "list":
        list_tasks(args.project, args.status)
    elif args.command == "complete":
        complete_task(args.id)

chmod +x scripts/task_manager.py