import { fileURLToPath, URL } from 'node:url'
import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import vueDevTools from 'vite-plugin-vue-devtools'
import { viteSingleFile } from 'vite-plugin-singlefile'
import { VitePWA } from 'vite-plugin-pwa'
import VueJsx from '@vitejs/plugin-vue-jsx'
import { execSync } from 'node:child_process'

function getGitCommit() {
    try {
        return execSync('git rev-parse --short HEAD').toString().trim()
    } catch {
        return 'unknown'
    }
}

export default defineConfig(({ mode }) => {
    const isProd = mode === 'production'

    // Set COMMIT_HASH env var for use in the app
    const version = process.env.npm_package_version || '0.0.0'
    const commit = getGitCommit()
    console.log(`Building version ${version} (commit: ${commit})`)
    process.env.COMMIT_HASH = commit
    process.env.APP_VERSION = version
    process.env.IS_DEV = !isProd ? 'true' : 'false'
    // If the build is a production build, update the server with the new version
    if (isProd) {
        console.log('Updating server with new version...')
        const token = process.env.SERVER_UPDATE_TOKEN
        if (!token) {
            console.warn('SERVER_UPDATE_TOKEN is not set. Skipping server update.')
        } else {
            // Run GET request to update version endpoint
            const url = `https://api.truckwash.dk/worker/update-version?version=${commit}`
            const bearer = `Bearer ${token}`
            console.log(`Calling URL: ${url}`)
            try {
                execSync(`curl -f -X GET "${url}" -H "Authorization: ${bearer}"`)
                console.log('Successfully updated server with new version.')
            } catch (error) {
                console.error('Failed to update server with new version:', error.message)
            }
        }
    }
    // Keep a relative base for static hosting; align manifest with base
    const base = '/'
    const pwaScope = base === './' ? '.' : base

    // Enable single-file build only when explicitly requested (disabled by default for PWA)
    const enableSingleFile = process.env.VITE_SINGLE_FILE === 'true' && !isProd

    return {
        base,
        plugins: [
            vue(),
            VueJsx(),
            !isProd && vueDevTools(),
            enableSingleFile && viteSingleFile(),
            VitePWA({
                registerType: 'autoUpdate',
                injectRegister: 'auto',
                strategies: 'generateSW',
                devOptions: {
                    enabled: false // keep for local dev
                },
                workbox: {
                    maximumFileSizeToCacheInBytes: 12 * 1024 * 1024,
                    cleanupOutdatedCaches: true,
                    skipWaiting: true,
                    clientsClaim: true,
                    globPatterns: ['**/*.{js,css,html,ico,svg,woff2}'],
                    globIgnores: ['**/registerSW.js', '**/sw.js'],
                    runtimeCaching: [
                        {
                            // cache API responses
                            urlPattern: ({ url }) => url.origin === 'https://api.truckwash.io',
                            handler: 'NetworkFirst',
                            options: {
                                cacheName: 'pleno-api-cache',
                                expiration: {
                                    maxEntries: 100,
                                    maxAgeSeconds: 5 * 60 // 5 minutes
                                },
                                networkTimeoutSeconds: 10,
                                cacheableResponse: {
                                    statuses: [200] // avoid opaque caching for API
                                }
                            }
                        },
                        {
                            // cache same-origin static assets
                            urlPattern: ({ sameOrigin, request }) =>
                                sameOrigin && ['style', 'script', 'font'].includes(request.destination),
                            handler: 'StaleWhileRevalidate',
                            options: {
                                cacheName: 'pleno-website-cache',
                                expiration: {
                                    maxEntries: 50,
                                    maxAgeSeconds: 24 * 60 * 60 // 24 hours
                                },
                                cacheableResponse: {
                                    statuses: [0, 200]
                                }
                            }
                        },
                        {
                            // cache images (restrict to same-origin; loosen if you use a trusted CDN)
                            urlPattern: ({ sameOrigin, request }) =>
                                sameOrigin && request.destination === 'image',
                            handler: 'CacheFirst',
                            options: {
                                cacheName: 'pleno-image-cache',
                                expiration: {
                                    maxEntries: 100,
                                    maxAgeSeconds: 7 * 24 * 60 * 60 // 7 days
                                },
                                cacheableResponse: {
                                    statuses: [0, 200]
                                }
                            }
                        }
                    ]
                },
                manifest: {
                    name: 'Truck Wash Kundeportal',
                    short_name: 'Truck Wash',
                    description: 'Access your Truck Wash accounts and transactions from anywhere.',
                    theme_color: '#063651',
                    background_color: '#0787bb',
                    // Use relative scope when base is relative
                    start_url: pwaScope,
                    scope: pwaScope,
                    display: 'standalone',
                    orientation: 'portrait',
                    launch_handler: { client_mode: 'navigate-existing' },
                    icons: [
                        { src: 'favicons/web-app-manifest-192x192.png', sizes: '192x192', type: 'image/png' },
                        { src: 'favicons/web-app-manifest-512x512.png', sizes: '512x512', type: 'image/png' },
                        // Optional: add a maskable icon
                        // { src: 'icons/icon-512x512-maskable.png', sizes: '512x512', type: 'image/png', purpose: 'any maskable' }
                    ],
                    id: 'pleno-pwa-test'
                },
                useCredentials: true
            })
        ].filter(Boolean),
        resolve: {
            alias: {
                '@': fileURLToPath(new URL('./src', import.meta.url))
            }
        },
        define: {
            'import.meta.env.VITE_BUILD_DATE': JSON.stringify(new Date().toISOString()),
            'import.meta.env.VITE_APP_VERSION': JSON.stringify(process.env.APP_VERSION || '0.0.0'),
            'import.meta.env.VITE_COMMIT_HASH': JSON.stringify(commit),
            // Tip: import.meta.env.DEV/PROD are available at runtime
            'import.meta.env.VITE_IS_DEV': JSON.stringify(!isProd),
        },
        css: {
            preprocessorOptions: {
                scss: {
                    api: 'modern-compiler',
                    silenceDeprecations: ['import', 'global-builtin', 'legacy-js-api']
                }
            }
        }
    }
})