import { defineConfig, loadEnv } from 'vite';
import vue from '@vitejs/plugin-vue';
import tailwindcss from '@tailwindcss/vite';
import path from 'path';

const normalizeBasePath = (value: string | undefined): string => {
    const pathValue = (value ?? '/').trim();
    if (!pathValue || pathValue === '/') {
        return '/';
    }
    return `/${pathValue.replace(/^\/+|\/+$/g, '')}/`;
};

const resolvePreviewAllowedHosts = (value: string | undefined): true | string[] => {
    const normalized = value?.trim();
    if (normalized === '*') {
        return true;
    }
    const hosts = (normalized ?? 'dev-sam-e2e.hided.net')
        .split(',')
        .map((host) => host.trim())
        .filter(Boolean);
    return hosts;
};

// https://vitejs.dev/config/
export default defineConfig(({ mode }) => {
    const env = loadEnv(mode, process.cwd(), '');
    return {
        base: normalizeBasePath(env.VITE_APP_BASE_PATH),
        plugins: [vue(), tailwindcss()],
        resolve: {
            alias: {
                '@': path.resolve(import.meta.dirname, './src'),
            },
        },
        server: {
            host: '0.0.0.0',
            port: 3000,
        },
        preview: {
            host: '0.0.0.0',
            allowedHosts: resolvePreviewAllowedHosts(env.VITE_PREVIEW_ALLOWED_HOSTS),
        },
    };
});