const { resolve } = require('path');

const { readFileSync, writeFileSync } = require('fs');

const safeJSON = require('./safeJSON');

const updateRedirects = redirects => {

const firebaseConfig = resolve(__dirname, '../firebase.json');

const firebaseJSON = safeJSON.parse(readFileSync(firebaseConfig));

// Map data as firebase expects it to be

const firebaseRedirects = {};

Object.entries(redirects).forEach(([key, value]) => {

firebaseRedirects[key] = {

source: key,

destination: value,

type: '302',

};

});

// Delete keys that already exists in the firebase.json

Object.entries(firebaseJSON.redirects).forEach(([key]) => {

delete firebaseRedirects[key];

});

// Serialize the redirects as firebase expects it to be

const newRedirects = [];

Object.keys(firebaseRedirects).forEach(value =>

newRedirects.push({

source: value,

destination: firebaseRedirects[value].destination,

type: '301',

})

);

writeFileSync(

firebaseConfig,

safeJSON.toString({ ...firebaseJSON, redirects: newRedirects }, null, 2)

);

};

module.exports = updateRedirects;