"""Project agent — full lifecycle management (list, get, create, update, archive, delete).

Adapted for Chat Service: import from app.ws_context instead of app.core.ws_context.
"""

from __future__ import annotations

from typing import Any

from langchain_core.tools import tool

from app.ws_context import execute_on_client

PROJECT_SYSTEM_PROMPT = (
    "You are a project management assistant. You help users create, find,\n"
    "update, and archive projects in their workspace.\n\n"
    "Rules:\n"
    "  - status must be one of: active, archived\n"
    "  - client_id is optional; link to a client only when explicitly mentioned\n"
    "  - ai_summary is populated only when the user asks for a project summary;\n"
    "    derive it from context data — do not fabricate content\n"
    "  - Use list_projects for scoped queries; list_all_projects only when the\n"
    "    user wants a complete cross-client view including archived projects\n"
    "  - get_project requires a project UUID; resolve the ID first by calling\n"
    "    list_projects if you only have a project name\n"
    "  - Prefer archiving (update_project status=archived) over deletion;\n"
    "    only call delete_project when the user explicitly confirms deletion."
)


@tool
async def list_projects(
    client_id: str = "",
    include_archived: int = 0,
) -> str:
    """List projects, optionally filtered by client_id.
    include_archived: 1 to include archived projects, 0 for active only (default).
    """
    result = await execute_on_client(
        action="select",
        table="projects",
        filters={
            "clientId": client_id or None,
            "includeArchived": bool(include_archived),
        },
    )
    rows = result.get("rows", [])
    if not rows:
        return "No projects found."
    lines = [f"- {r['name']} (status: {r['status']}, id: {r['id']})" for r in rows]
    return f"Found {len(rows)} project(s):\n" + "\n".join(lines)


@tool
async def list_all_projects() -> str:
    """List every project regardless of client or status.
    Use only when the user wants a complete cross-client overview.
    """
    result = await execute_on_client(action="select", table="projects")
    rows = result.get("rows", [])
    if not rows:
        return "No projects found."
    lines = [f"- {r['name']} (status: {r['status']}, id: {r['id']})" for r in rows]
    return f"All projects ({len(rows)}):\n" + "\n".join(lines)


@tool
async def get_project(project_id: str) -> str:
    """Fetch a single project by its UUID."""
    result = await execute_on_client(action="get", table="projects", data={"id": project_id})
    row = result.get("row")
    if not row:
        return f"Project {project_id} not found."
    return (
        f"Project: '{row['name']}' (id: {row['id']}, status: {row['status']}, "
        f"clientId: {row.get('clientId', 'none')})"
    )


@tool
async def create_project(
    name: str,
    client_id: str = "",
) -> str:
    """Create a new project.
    name: human-readable project name (required)
    client_id: optional UUID of the owning client
    """
    result = await execute_on_client(
        action="insert",
        table="projects",
        data={"name": name, "clientId": client_id or None},
    )
    row = result["row"]
    return f"Project created: '{row['name']}' (id: {row['id']})"


@tool
async def update_project(
    project_id: str,
    name: str = "",
    client_id: str = "",
    status: str = "",
    ai_summary: str = "",
) -> str:
    """Update a project. Only pass fields that should change.
    project_id: UUID of the project (required)
    status: active | archived
    ai_summary: AI-generated summary text (populate only when explicitly requested)
    """
    updates: dict[str, Any] = {}
    if name:
        updates["name"] = name
    if client_id:
        updates["clientId"] = client_id
    if status:
        updates["status"] = status
    if ai_summary:
        updates["aiSummary"] = ai_summary
    result = await execute_on_client(
        action="update",
        table="projects",
        data={"id": project_id, "updates": updates},
    )
    row = result["row"]
    return f"Project updated: '{row['name']}' (id: {row['id']}, status: {row['status']})"


@tool
async def delete_project(project_id: str) -> str:
    """Permanently delete a project and orphan its tasks.
    IMPORTANT: prefer update_project(status='archived') unless the user
    has explicitly confirmed they want permanent deletion.
    """
    await execute_on_client(action="delete", table="projects", data={"id": project_id})
    return f"Project {project_id} permanently deleted."


PROJECT_TOOLS: list[Any] = [
    list_projects,
    list_all_projects,
    get_project,
    create_project,
    update_project,
    delete_project,
]