"""
Property Setter + Customize Form tools.
Property Setters override DocType field properties without touching core — the safe
way to customize standard DocTypes (e.g. Sales Order, Customer).
"""

import json
from mcp.types import Tool
from frappe_mcp.client.frappe_api import FrappeClient


def tools() -> list[Tool]:
    return [
        Tool(
            name="frappe_list_property_setters",
            description="List all Property Setters, optionally filtered by DocType.",
            inputSchema={
                "type": "object",
                "properties": {
                    "doc_type": {"type": "string"},
                    "field_name": {"type": "string"},
                    "property": {"type": "string"},
                    "limit": {"type": "integer", "default": 50},
                },
            },
        ),
        Tool(
            name="frappe_create_property_setter",
            description=(
                "Override a property of a DocType field (or the DocType itself) without modifying core. "
                "Common properties: reqd, hidden, read_only, default, options, label, bold, in_list_view, "
                "in_standard_filter, description, depends_on, mandatory_depends_on, read_only_depends_on."
            ),
            inputSchema={
                "type": "object",
                "required": ["doc_type", "property", "value", "property_type"],
                "properties": {
                    "doc_type": {"type": "string", "description": "DocType to customize"},
                    "field_name": {"type": "string", "description": "Fieldname to override (empty for DocType-level)"},
                    "property": {"type": "string", "description": "Property to override e.g. 'reqd', 'hidden'"},
                    "value": {"type": "string", "description": "New value"},
                    "property_type": {
                        "type": "string",
                        "description": "Data type: Check, Data, Int, Select, Text, etc.",
                        "default": "Check",
                    },
                    "row_name": {"type": "string", "description": "For child table row overrides"},
                },
            },
        ),
        Tool(
            name="frappe_remove_property_setter",
            description="Remove a Property Setter, restoring the DocType's original property value.",
            inputSchema={
                "type": "object",
                "required": ["name"],
                "properties": {
                    "name": {"type": "string", "description": "Property Setter document name"},
                },
            },
        ),
        Tool(
            name="frappe_get_customize_form",
            description=(
                "Get the full customization state of a DocType — all Property Setters, "
                "Custom Fields, and effective field properties merged."
            ),
            inputSchema={
                "type": "object",
                "required": ["doc_type"],
                "properties": {
                    "doc_type": {"type": "string"},
                },
            },
        ),
        Tool(
            name="frappe_reset_customization",
            description=(
                "Remove ALL customizations (Property Setters + Custom Fields) from a DocType, "
                "restoring it to its original state. Destructive — use with caution."
            ),
            inputSchema={
                "type": "object",
                "required": ["doc_type"],
                "properties": {
                    "doc_type": {"type": "string"},
                },
            },
        ),
    ]


def handlers() -> dict:
    return {
        "frappe_list_property_setters": _list_property_setters,
        "frappe_create_property_setter": _create_property_setter,
        "frappe_remove_property_setter": _remove_property_setter,
        "frappe_get_customize_form": _get_customize_form,
        "frappe_reset_customization": _reset_customization,
    }


async def _list_property_setters(args: dict) -> str:
    client = FrappeClient()
    filters = []
    if dt := args.get("doc_type"):
        filters.append(["doc_type", "=", dt])
    if fn := args.get("field_name"):
        filters.append(["field_name", "=", fn])
    if prop := args.get("property"):
        filters.append(["property", "=", prop])
    result = await client.get_list(
        "Property Setter",
        fields=["name", "doc_type", "field_name", "property", "value"],
        filters=filters if filters else None,
        limit=args.get("limit", 50),
    )
    return json.dumps(result, indent=2)


async def _create_property_setter(args: dict) -> str:
    client = FrappeClient()
    payload = {
        "doc_type": args["doc_type"],
        "field_name": args.get("field_name", ""),
        "property": args["property"],
        "value": args["value"],
        "property_type": args.get("property_type", "Check"),
        "row_name": args.get("row_name", ""),
        "doctype_or_field": "DocField" if args.get("field_name") else "DocType",
    }
    result = await client.create_doc("Property Setter", payload)
    return json.dumps(result, indent=2)


async def _remove_property_setter(args: dict) -> str:
    client = FrappeClient()
    result = await client.delete_doc("Property Setter", args["name"])
    return json.dumps(result, indent=2)


async def _get_customize_form(args: dict) -> str:
    client = FrappeClient()
    result = await client.call_method(
        "frappe.desk.form.load.getdoc",
        doctype="Customize Form",
        name="Customize Form",
    )
    # fetch the form for this specific doctype
    form_result = await client.call_method(
        "frappe.client.get",
        doctype="Customize Form",
        filters={"doc_type": args["doc_type"]},
    )
    return json.dumps(form_result, indent=2)


async def _reset_customization(args: dict) -> str:
    client = FrappeClient()
    result = await client.call_method(
        "frappe.custom.doctype.customize_form.customize_form.reset_customization",
        doc_type=args["doc_type"],
    )
    return json.dumps(result, indent=2)