Created
August 8, 2023 10:58
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update-env script
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#!/usr/bin/env node | |
/** | |
* Usage: | |
* | |
* ./update-env.mjs \ | |
* --KEY=value \ | |
* --KEY2=value \ | |
* --key3="Values with spaces need quotes" \ | |
* --K "The assignment operator after a flag is optional" | |
* etc | |
* | |
* or optionally specify a .env path: | |
* ./update-env.mjs \ | |
* --__ENV_PATH=/path/to/some/file \ | |
* --KEY=value \ | |
* etc | |
*/ | |
import { existsSync, readFileSync, writeFileSync } from 'fs' | |
import { join, dirname } from 'path' | |
import { fileURLToPath } from 'url' | |
const __dirname = dirname(fileURLToPath(import.meta.url)) | |
function updateEnv(varName, value, envPath) { | |
if (!existsSync(envPath)) { | |
writeFileSync(envPath, '') | |
} | |
const content = readFileSync(envPath, 'utf8') | |
const lines = content.split('\n') | |
let found = false | |
for (let i = 0; i < lines.length; i++) { | |
if (lines[i].startsWith(`${varName}=`)) { | |
lines[i] = `${varName}=${value}` | |
found = true | |
break | |
} | |
} | |
if (!found) { | |
lines.push(`${varName}=${value}`) | |
} | |
writeFileSync( | |
envPath, | |
lines.filter(line => line.trim() !== '').join('\n') + '\n' | |
) | |
} | |
const args = process.argv.slice(2) | |
const configs = {} | |
for (let i = 0; i < args.length; i++) { | |
if (args[i].startsWith('--')) { | |
const keySegment = args[i].slice(2) | |
if (keySegment.includes('=')) { | |
const [key, value] = keySegment.split('=') | |
configs[key] = value | |
} else if (i + 1 < args.length && !args[i + 1].startsWith('--')) { | |
const key = keySegment | |
const value = args[++i] | |
configs[key] = value | |
} else { | |
configs[keySegment] = 'true' | |
} | |
} | |
} | |
if (!Object.keys(configs).length) { | |
console.log( | |
'Usage: configure-env.mjs --<CONFIG_NAME>=<CONFIG_VALUE>, --<CONFIG_NAME> <CONFIG_VALUE>, or --<CONFIG_NAME>' | |
) | |
process.exit(1) | |
} | |
let envPath = join(__dirname, '..', '.env') | |
if (configs.__ENV_PATH) { | |
envPath = configs.__ENV_PATH | |
delete configs.__ENV_PATH | |
} | |
for (const [configName, configValue] of Object.entries(configs)) { | |
updateEnv(configName, configValue, envPath) | |
} |
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