import esbuild from "esbuild";
import process from "process";
import { builtinModules } from "node:module";
import path from "path";
import fs from "fs";

const banner =
`/*
THIS IS A GENERATED/BUNDLED FILE BY ESBUILD
if you want to view the source, please visit the github repository of this plugin
*/
`;

const prod = (process.argv[2] === "production");

const context = await esbuild.context({
    banner: {
        js: banner,
    },
    entryPoints: ["src/main.ts"],
    bundle: true,
    plugins: [{
        name: "import-glob",
        setup: (build) => {
            build.onResolve({ filter: /^glob:.*$/ }, async (args) => {
                return {
                    path: args.path.replace(/^glob:/, ''),
                    namespace: 'import-glob',
                    pluginData: { resolveDir: args.resolveDir },
                };
            });
            build.onLoad({ filter: /.*/, namespace: 'import-glob' }, async (args) => {
                const files = fs.globSync(args.path, {cwd: args.pluginData.resolveDir})
                    .map((f) => f.split(path.sep).join('/'))
                    .sort();
                return {
                    contents: [
                        ...files.map((module, i) => `import m${i} from './${module}'`),
                        "export default {",
                            ...files.map((f, i) => `${JSON.stringify(path.basename(f, path.extname(f)))}: m${i},`),
                        "}",
                    ].join("\n"),
                    resolveDir: args.pluginData.resolveDir,
                };
            });
        },
    }],
    external: [
        "obsidian",
        "electron",
        "@codemirror/autocomplete",
        "@codemirror/collab",
        "@codemirror/commands",
        "@codemirror/language",
        "@codemirror/lint",
        "@codemirror/search",
        "@codemirror/state",
        "@codemirror/view",
        "@lezer/common",
        "@lezer/highlight",
        "@lezer/lr",
        ...builtinModules,
    ],
    format: "cjs",
    target: "es2018",
    logLevel: "info",
    sourcemap: prod ? false : "inline",
    treeShaking: true,
    outfile: "main.js",
    minify: prod,
});

if (prod) {
    await context.rebuild();
    process.exit(0);
} else {
    await context.watch();
}