import { z } from "zod";
import { withAuth } from "../../auth/index.js";
import { withAuthParams } from "../helpers/authSchema.js";
import { handleToolError } from "../helpers/errorHandler.js";
import { callSchemaEndpoint } from "./_schemaEndpoint.js";

// Tool: create_field
// Crea un nuevo campo en una tabla existente. Backend aplica los defaults
// segun `type` y permite overrides via `initialProps`.

const FIELD_TYPES = [
    "textfield", "textbox", "wysiwyg", "date", "list",
    "checkbox", "upload", "multitext", "codigo", "separator",
];

export function registerCreateFieldTool(server) {
    server.tool(
        "create_field",
        `Add a new field to an existing table.

Field types:
 - textfield: single-line text
 - textbox: multi-line plain text
 - wysiwyg: rich text editor
 - codigo: code editor (HTML/JS/CSS snippet)
 - date: date/datetime picker
 - list: select/radio/checkboxes (needs listType + optionsType in initialProps)
 - checkbox: boolean
 - upload: file upload (images/docs)
 - multitext: repeater of text entries
 - separator: visual separator in the form (no data column)

'initialProps' is optional; use it to override defaults (e.g. {isRequired:1, maxLength:100}).
Table names WITHOUT 'cms_' prefix. Primary key is always 'num'.`,
        withAuthParams({
            tableName: z.string().describe("Table name without 'cms_' prefix"),
            fieldName: z.string().describe("New field name (SQL-safe identifier)"),
            label: z.string().describe("Human-readable label shown in the admin form"),
            type: z.enum(FIELD_TYPES).describe("Field type"),
            initialProps: z.object({}).passthrough().optional().describe("Optional overrides for the default field config"),
        }),
        { readOnlyHint: false, destructiveHint: false },
        withAuth(async ({ tableName, fieldName, label, type, initialProps }, _extra) => {
            try {
                const body = { tableName, fieldName, label, type };
                if (initialProps && typeof initialProps === "object") body.initialProps = initialProps;

                const { mcp } = await callSchemaEndpoint("/api/schema/create-field", body);
                return mcp;
            } catch (error) {
                return handleToolError(error, "create_field", { tableName, fieldName, type });
            }
        })
    );
}