import * as fs from "fs";

// @ts-ignore
import * as ddl2Schema from "../schema/v2.json";
import { upgrade } from "./upgrade";

const args = process.argv.slice(2);

switch (args[0]) {
    case "--echo":
        process.stdout.write(args[1]);
        break;
    case "--schema":
        process.stdout.write(JSON.stringify(ddl2Schema));
        break;
    case "--upgrade":
    case "--upgradeNoLower":
        const srcPath = args[1];
        const destPath = args[2];
        const baseUrl = args[3];
        const wuid = args[4];
        const layoutPath = args[5];
        if (srcPath && destPath && srcPath !== destPath) {
            let layoutJson = {};
            if (layoutPath) {
                try {
                    layoutJson = JSON.parse(fs.readFileSync(layoutPath).toString());
                } catch (e) {
                    console.error(e);
                }
            }
            fs.readFile(srcPath, "utf8", function (err, data) {
                if (err) throw err;
                const ddl2 = upgrade(
                    JSON.parse(data),
                    baseUrl || "http://localhost:8010",
                    wuid || "WUID",
                    args[0] === "--upgrade",
                    layoutJson
                );
                fs.writeFile(destPath, JSON.stringify(ddl2), function (err) {
                    if (err) throw err;
                    console.log("complete");
                });
            });
        }
        break;
    case "--help":
        break;
    default:
        process.stdout.write(`
Usage:  <command>

where <command> is one of:
    --schema:  output DDL2 schmea.
    --upgrade ddl1 [baseUrl wuid [layout]]:  updgrade ddl and layout version 1 to ddl version 2.
    --upgradeNoLower ddl1 [baseUrl wuid [layout]]:  updgrade ddl and layout version 1 to ddl version 2 without changing field IDs upper/lower casing.
    --help:  this message.
`);
}