import { readFile } from "node:fs/promises";
import path from "node:path";
import { fileURLToPath } from "node:url";

const scriptDirectory = path.dirname(fileURLToPath(import.meta.url));
const repoRoot = path.resolve(scriptDirectory, "..");
const openApiPath = path.join(repoRoot, "openapi", "RpgRoller.json");
const appTsPath = path.join(repoRoot, "RpgRoller", "frontend", "app.ts");
const generatedClientPath = path.join(repoRoot, "RpgRoller", "frontend", "generated", "api-client.ts");

const openApi = JSON.parse(await readFile(openApiPath, "utf8"));
const generatedClient = await readFile(generatedClientPath, "utf8");
const appSource = await readFile(appTsPath, "utf8");
const errors = [];

if (!appSource.includes("from \"./generated/api-client.js\"")) {
    errors.push("Frontend app.ts must import the generated api-client module.");
}

for (const [pathKey, pathItem] of Object.entries(openApi.paths ?? {})) {
    for (const [method, operation] of Object.entries(pathItem ?? {})) {
        if (operation === null || typeof operation !== "object") {
            continue;
        }

        if (typeof operation.operationId !== "string" || operation.operationId.length === 0) {
            errors.push(`Missing operationId for ${method.toUpperCase()} ${pathKey}`);
            continue;
        }

        if (!generatedClient.includes(`apiOperations.${operation.operationId}`)) {
            errors.push(`Generated client is missing operation export for ${operation.operationId}`);
        }
    }
}

if (errors.length > 0) {
    throw new Error(errors.join("\n"));
}

console.log("Frontend lint checks passed.");