/**
 * CONFIG: https://vite.dev/config/
 */

import { resolve } from "node:path";
import { defineConfig } from "vite";
import { viteStaticCopy } from "vite-plugin-static-copy";
import { plg_svg2png, plg_svg2svg } from "./tools/plg.js";

const ROOT = "../.."; // root of the git reposetory

const PATH = {
  dist: resolve(ROOT, "searx/static/themes/simple"),
  // dist: resolve(ROOT, "client/simple/dist"),

  src: "src",
  modules: "node_modules",
  brand: "src/brand",
  static: resolve(ROOT, "client/simple/static"),
  leaflet: resolve(ROOT, "client/simple/node_modules/leaflet/dist"),
  templates: resolve(ROOT, "searx/templates/simple")
};

/**
 * @type {import('svgo').Config}
 */
const svg2svg_opts = {
  plugins: [{ name: "preset-default" }, "sortAttrs", "convertStyleToAttrs"]
};

/**
 * @type {import('svgo').Config}
 */
const svg2svg_favicon_opts = {
  plugins: [{ name: "preset-default" }, "sortAttrs"]
};

export default defineConfig({
  root: PATH.src,
  mode: "production",
  // mode: "development",

  // FIXME: missing CCS sourcemaps!!
  // see: https://github.com/vitejs/vite/discussions/13845#discussioncomment-11992084
  //
  // what I have tried so far (see config below):
  //
  // - build.sourcemap
  // - esbuild.sourcemap
  // - css.preprocessorOptions.less.sourceMap

  css: {
    devSourcemap: true,
    preprocessorOptions: {
      less: {
        // FIXME: missing CCS sourcemaps!!
        sourceMap: {
          outputSourceFiles: true,
          sourceMapURL: (name) => {
            const s = name.split("/");
            return `${s[s.length - 1]}.map`;
          }
        }
        // env: 'development',
        // relativeUrls: true,
        // javascriptEnabled: true,
      }
    }
  }, // end: css

  esbuild: {
    // FIXME: missing CCS sourcemaps!!
    sourcemap: true
  },

  build: {
    target: "modules",
    manifest: "manifest.json",
    emptyOutDir: true,
    assetsDir: "",
    outDir: PATH.dist,

    // FIXME: missing CCS sourcemaps!!
    sourcemap: true,

    // https://vite.dev/config/build-options.html#build-cssminify
    cssMinify: true,
    // cssMinify: "esbuild",
    minify: "esbuild",

    rollupOptions: {
      input: {
        // build CSS files
        "css/searxng.min.css": `${PATH.src}/less/style-ltr.less`,
        "css/searxng-rtl.min.css": `${PATH.src}/less/style-rtl.less`,
        "css/rss.min.css": `${PATH.src}/less/rss.less`,

        // build JS files
        "js/searxng.head.min": `${PATH.src}/js/searxng.head.js`,
        "js/searxng.min": `${PATH.src}/js/searxng.js`
      },

      // file naming conventions / pathnames are relative to outDir (PATH.dist)
      output: {
        entryFileNames: "[name].js",
        chunkFileNames: "[name].js",
        assetFileNames: "[name].[ext]"
        // Vite does not support "rollupOptions.output.sourcemap".
        // Please use "build.sourcemap" instead.
        // sourcemap: true,
      }
    }
  }, // end: build

  plugins: [
    // Leaflet

    viteStaticCopy({
      targets: [
        { src: `${PATH.leaflet}/leaflet.{js,js.map}`, dest: `${PATH.dist}/js` },
        { src: `${PATH.leaflet}/images/*.png`, dest: `${PATH.dist}/css/images/` },
        { src: `${PATH.leaflet}/*.{css,css.map}`, dest: `${PATH.dist}/css` },
        { src: `${PATH.static}/**/*`, dest: PATH.dist }
      ]
    }),

    // -- svg images

    plg_svg2svg(
      [
        { src: `${PATH.src}/svg/empty_favicon.svg`, dest: `${PATH.dist}/img/empty_favicon.svg` },
        { src: `${PATH.src}/svg/select-dark.svg`, dest: `${PATH.dist}/img/select-dark.svg` },
        { src: `${PATH.src}/svg/select-light.svg`, dest: `${PATH.dist}/img/select-light.svg` }
      ],
      svg2svg_opts
    ),

    // SearXNG brand (static)

    plg_svg2png([
      { src: `${PATH.brand}/searxng-wordmark.svg`, dest: `${PATH.dist}/img/favicon.png` },
      { src: `${PATH.brand}/searxng.svg`, dest: `${PATH.dist}/img/searxng.png` }
    ]),

    // -- svg
    plg_svg2svg(
      [
        { src: `${PATH.brand}/searxng.svg`, dest: `${PATH.dist}/img/searxng.svg` },
        { src: `${PATH.brand}/img_load_error.svg`, dest: `${PATH.dist}/img/img_load_error.svg` }
      ],
      svg2svg_opts
    ),

    // -- favicon
    plg_svg2svg(
      [{ src: `${PATH.brand}/searxng-wordmark.svg`, dest: `${PATH.dist}/img/favicon.svg` }],
      svg2svg_favicon_opts
    ),

    // -- simple templates
    plg_svg2svg(
      [{ src: `${PATH.brand}/searxng-wordmark.svg`, dest: `${PATH.templates}/searxng-wordmark.min.svg` }],
      svg2svg_opts
    )
  ] // end: plugins
});