/// <reference lib="deno.ns" />

/** 
 * @author Esad Mustafoski
 * @file api/helpers.ts
 * @description Helper functions for the API
 * 
 */
import { Context } from "https://deno.land/x/oak/mod.ts";
import { encodeHex } from "jsr:@std/encoding/hex";
// import { hash } from "node:crypto";

export type ApiResponse = {
    status: number;
    body: unknown;
};

// --- Helper Functions --- //
/**
 * @description Sends a response to the client
 * @usage sendResponse(ctx, { status: 200, body: { message: "Success" } })
 * Status is the HTTP Status code
 * Body is the response body/message/data.
 */
const sendResponse = (ctx: Context, {status, body}: ApiResponse): void => {
    ctx.response.status = status;
    ctx.response.body = body as any;
};

/**
 * @usage errorResponse(ctx, 401, "Unauthorized")
 * @see sendResponse
 */
const errorResponse = (ctx: Context, status: number, message: string): void => {
    sendResponse(ctx, { status, body: { error: message } });
};

/** 
 * @description Hashing Function for Passwords/etc 
 * @param password The password to hash
 */
const hashPassword = async(password: string): Promise<string> => {
    const to_hash = password;
    const buffer = new TextEncoder().encode(to_hash);
    const hash_buffer = await crypto.subtle.digest("SHA-256", buffer);
    const hash = await encodeHex(hash_buffer);
    
    return hash;
}

export {
    sendResponse,
    errorResponse,
    hashPassword
};