import { App } from "obsidian";
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { z } from "zod";
import { findAndParseSchemas } from "./schema";
import { StructuredManagerConfig } from "../managers/StructuredManager";
interface SchemaField {
type: string;
required?: boolean;
description?: string;
[key: string]: unknown;
}
const description = `
Lists all available schemas and their details. Each schema defines a data structure that can be managed through structured tools.
`;
export function registerListSchemasHandler(
app: App,
mcpServer: McpServer,
config: StructuredManagerConfig,
): void {
mcpServer.tool(
"obsidian-mcp-list-schemas",
description,
z.object({}).shape,
async (_args: Record<string, never>, extra: unknown) => {
void _args;
void extra;
try {
const schemas = await findAndParseSchemas(app, config);
if (schemas.length === 0) {
return {
content: [
{
type: "text",
text: "No schema files found in the schemas directory",
},
],
};
}
// Return detailed information about each schema
return {
content: schemas.map(schema => ({
type: "text" as const,
text: [
`Schema: ${schema.metadata.schemaName}`,
`Description: ${schema.metadata.description}`,
`Path Template: ${schema.metadata.pathTemplate}`,
`Required Fields: ${schema.metadata.pathComponents.join(", ")}`,
`Fields:`,
...Object.entries(schema.fields as Record<string, SchemaField>).map(
([name, field]) =>
` - ${name} (${field.type})${
field.required ? "" : " (optional)"
}: ${field.description || ""}`,
),
].join("\n"),
})),
structuredContent: undefined,
};
} catch (error) {
return {
content: [
{
type: "text",
text: `Error listing schemas: ${
error instanceof Error ? error.message : String(error)
}`,
},
],
isError: true,
structuredContent: undefined,
};
}
},
);
}
