"""Task tools: list, log work."""

from __future__ import annotations

from fabledassistant.services.notes import get_note_by_title, list_notes
from fabledassistant.services.tools._helpers import (
    parse_due_date,
    resolve_project,
)
from fabledassistant.services.tools._registry import tool


@tool(
    name="list_tasks",
    description="List tasks with optional filters. For overdue tasks, set due_before to today's date.",
    parameters={
        "q": {"type": "string", "description": "Optional keyword filter — searches title and body"},
        "status": {"type": "array", "items": {"type": "string", "enum": ["todo", "in_progress", "done", "cancelled"]}, "description": "Filter by one or more statuses. Omit for all."},
        "priority": {"type": "string", "enum": ["none", "low", "medium", "high"], "description": "Filter by priority level"},
        "due_before": {"type": "string", "description": "Return tasks due before this date (YYYY-MM-DD). Use today's date to find overdue tasks."},
        "due_after": {"type": "string", "description": "Return tasks due on or after this date (YYYY-MM-DD)"},
        "project": {"type": "string", "description": "Filter tasks by project name"},
        "milestone": {"type": "string", "description": "Filter tasks by milestone name within a project"},
        "limit": {"type": "integer", "description": "Maximum number of tasks to return (default 10)"},
    },
    read_only=True,
    briefing=True,
)
async def list_tasks_tool(*, user_id, arguments, **_ctx):
    project_id = None
    milestone_id = None
    project_name = arguments.get("project")
    milestone_name = arguments.get("milestone")
    if project_name:
        proj = await resolve_project(user_id, project_name)
        if proj:
            project_id = proj.id
            if milestone_name:
                from fabledassistant.services.milestones import get_milestone_by_title
                ms = await get_milestone_by_title(user_id, proj.id, milestone_name)
                if ms:
                    milestone_id = ms.id
    elif milestone_name:
        from fabledassistant.services.milestones import find_milestone_by_title
        ms = await find_milestone_by_title(user_id, milestone_name)
        if ms:
            milestone_id = ms.id
    notes, total = await list_notes(
        user_id=user_id,
        q=arguments.get("q") or None,
        is_task=True,
        status=arguments.get("status"),
        priority=arguments.get("priority"),
        due_before=parse_due_date(arguments.get("due_before")),
        due_after=parse_due_date(arguments.get("due_after")),
        project_id=project_id,
        milestone_id=milestone_id,
        exclude_paused_projects=project_id is None,
        limit=int(arguments.get("limit", 10)),
        sort="due_date",
        order="asc",
    )
    results = []
    for n in notes:
        results.append({
            "id": n.id,
            "title": n.title,
            "status": n.status,
            "priority": n.priority,
            "due_date": str(n.due_date) if n.due_date else None,
            "project_id": n.project_id,
            "preview": (n.body[:120] + "...") if n.body and len(n.body) > 120 else (n.body or ""),
        })
    return {
        "success": True,
        "type": "tasks",
        "data": {"total": total, "count": len(results), "results": results},
    }


@tool(
    name="log_work",
    description="Add a work log entry to a task to record progress, work done, or time spent. Use this when the user says they worked on, completed, or spent time on a task.",
    parameters={
        "task": {"type": "string", "description": "Title or keyword identifying the task (required)"},
        "content": {"type": "string", "description": "Description of the work done (required)"},
        "duration_minutes": {"type": "integer", "description": "Optional time spent in minutes"},
    },
    required=["task", "content"],
)
async def log_work_tool(*, user_id, arguments, **_ctx):
    from fabledassistant.services.task_logs import create_log as _create_log

    task_query = arguments.get("task", "")
    content = arguments.get("content", "").strip()
    if not task_query:
        return {"success": False, "error": "task is required"}
    if not content:
        return {"success": False, "error": "content is required"}
    duration_minutes = arguments.get("duration_minutes")
    if duration_minutes is not None:
        try:
            duration_minutes = int(duration_minutes)
        except (TypeError, ValueError):
            duration_minutes = None
    note = await get_note_by_title(user_id, task_query)
    if note is None or note.status is None:
        notes, _ = await list_notes(user_id=user_id, q=task_query, is_task=True, limit=5)
        note = notes[0] if notes else None
    if note is None:
        return {"success": False, "error": f"No task found matching '{task_query}'."}
    try:
        log = await _create_log(user_id, note.id, content, duration_minutes)
    except ValueError as e:
        return {"success": False, "error": str(e)}
    return {"success": True, "log": log.to_dict(), "task": note.title}