Improve prisma scripts

scripts/postinstall.js

@@ -0,0 +1,28 @@
+require('dotenv').config();
+const fs = require('fs-extra');
+const { spawnSync } = require('child_process');
+
+
+const providers = ['mysql', 'postgresql', 'sqlite'];
+const provider = process.env.DB_PROVIDER;
+
+if (!provider) {
+	console.log('[postinstall] environment not set, exiting.');
+	process.exit(0);
+}
+
+if (!providers.includes(provider)) throw new Error(`DB_PROVIDER must be one of: ${providers}`);
+
+if (!fs.existsSync('./prisma')) fs.mkdirSync('./prisma');
+fs.copySync(`./db/${provider}`, './prisma'); // copy schema & migrations
+
+npx('prisma generate');
+npx('prisma migrate deploy');
+
+function npx(cmd) {
+	console.log(`[postinstall] > ${cmd}`);
+	const child = spawnSync('npx', cmd.split(/\s/));
+	if (child.stdout) console.log(child.stdout.toString());
+	if (child.stderr) console.log(child.stderr.toString());
+	if (child.status) process.exit(child.status);
+}