'use strict';

import inflate from "tiny-inflate";

import { ethers } from "ethers";

// This file is populated by the rollup-pre-alias.config.js
import data from "./browser-data.json";

export function saveTests(tag: string, data: any) {
    throw new Error("browser does not support writing testcases");
}

const Cache: { [ filename: string ]: any } = { };
export function loadTests(tag: string): any {
    let filename = 'testcases/' + tag + ".json.gz";
    if (Cache[filename] == null) {
        console.log(`Loading Test Case: ${ filename }`);
        try {
            let fileData: string = (<any>data)[filename];
            const comps = fileData.split(",");
            const size = parseInt(comps[0]), compressedData = ethers.utils.base64.decode(comps[1]);
            const uncompressedData = new Uint8Array(size);
            inflate(compressedData, uncompressedData);
            Cache[filename] = JSON.parse(ethers.utils.toUtf8String(uncompressedData));
        } catch (error) {
            console.log("ERROR", error);
            throw error;
        }
    }
    return Cache[filename];
}

export function loadData(filename: string): Uint8Array {
    // Strip any leading relative paths (e.g. "./foo" => "foo")
    filename = filename.replace(/^[^a-z0-9_]/i, "");
    console.log(`Loading Data File: ${ filename }`);
    //filename = path.join(filename);
    return ethers.utils.base64.decode((<any>data)[filename]);
}