"""Tool: Project Registry – Projekt-Registrierung, Status-Tracking und Historien-Snapshots."""
import json

from helpers.tool import Tool, Response
from usr.plugins.a0_software_orchestrator.helpers.exceptions import PluginDBError
from usr.plugins.a0_software_orchestrator.helpers.db_state_store import (
    list_projects,
    get_project_detail,
    register_project,
    update_project_state,
    create_project_snapshot,
    list_project_snapshots,
    remove_project,
)


class ProjectRegistry(Tool):
    """Tool for managing software project entries in the plugin's project database."""

    async def execute(
        self,
        action: str = "list",
        name: str = "",
        git_url: str = "",
        description: str = "",
        tech_stack: str = "",
        status: str = "",
        phase: str = "",
        plan_mode: str = "",
        total_tasks: int = 0,
        completed_tasks: int = 0,
        open_errors: int = 0,
        trigger: str = "",
        commit_hash: str = "",
        **kwargs
    ):
        try:
            if action == "list":
                projects = list_projects()
                return Response(
                    message=json.dumps(projects, indent=2, ensure_ascii=False),
                    break_loop=False
                )

            elif action == "detail":
                if not name:
                    return Response(message="Missing 'name' for detail action", break_loop=False)
                detail = get_project_detail(name)
                if not detail:
                    return Response(message=f"Project '{name}' not found.", break_loop=False)
                return Response(
                    message=json.dumps(detail, indent=2, ensure_ascii=False),
                    break_loop=False
                )

            elif action == "register":
                if not name:
                    return Response(message="Missing 'name' for register action", break_loop=False)
                if not git_url:
                    return Response(message="Missing 'git_url' for register action", break_loop=False)
                project_id = register_project(
                    name=name,
                    git_url=git_url,
                    description=description,
                    tech_stack=tech_stack or "{}",
                    status=status or "active",
                    phase=phase or "intake"
                )
                return Response(
                    message=f"Project '{name}' registered successfully (id={project_id}, git_url={git_url}).",
                    break_loop=False
                )

            elif action == "update":
                if not name:
                    return Response(message="Missing 'name' for update action", break_loop=False)
                fields = {}
                for field in ["status", "phase", "plan_mode"]:
                    val = kwargs.get(field, "")
                    if val:
                        fields[field] = val
                for field in ["total_tasks", "completed_tasks", "open_errors"]:
                    val = kwargs.get(field)
                    if val is not None:
                        fields[field] = int(val)
                if "last_active_at" in kwargs:
                    fields["last_active_at"] = kwargs["last_active_at"]
                if "completed_at" in kwargs:
                    fields["completed_at"] = kwargs["completed_at"]
                if not fields:
                    return Response(message="No fields to update.", break_loop=False)
                update_project_state(name, **fields)
                return Response(
                    message=f"Project '{name}' updated.",
                    break_loop=False
                )

            elif action == "snapshot":
                if not name:
                    return Response(message="Missing 'name' for snapshot action", break_loop=False)
                snapshot_id = create_project_snapshot(
                    name=name,
                    trigger=trigger or "manual",
                    commit_hash=commit_hash or ""
                )
                return Response(
                    message=f"Snapshot saved for project '{name}' (trigger: {trigger or 'manual'}).",
                    break_loop=False
                )

            elif action == "history":
                if not name:
                    return Response(message="Missing 'name' for history action", break_loop=False)
                snapshots = list_project_snapshots(name)
                return Response(
                    message=json.dumps(snapshots, indent=2, ensure_ascii=False),
                    break_loop=False
                )

            elif action == "remove":
                if not name:
                    return Response(message="Missing 'name' for remove action", break_loop=False)
                remove_project(name)
                return Response(
                    message=f"Project '{name}' removed from registry (snapshots also deleted).",
                    break_loop=False
                )

            else:
                supported = ["list", "detail", "register", "update", "snapshot", "history", "remove"]
                return Response(
                    message=f"Unknown action '{action}'. Supported: {', '.join(supported)}",
                    break_loop=False
                )

        except PluginDBError as e:
            return Response(message=f"Database error: {e}", break_loop=False)
        except ValueError as e:
            return Response(message=f"Error: {e}", break_loop=False)