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#!/usr/bin/env node
/*
 This file is part of GNU Taler
 (C) 2022 Taler Systems S.A.

 GNU Taler is free software; you can redistribute it and/or modify it under the
 terms of the GNU General Public License as published by the Free Software
 Foundation; either version 3, or (at your option) any later version.

 GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

 You should have received a copy of the GNU General Public License along with
 GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
 */

import esbuild from "esbuild";
import path from "path";
import fs from "fs";

// eslint-disable-next-line no-undef
const BASE = process.cwd();

let GIT_ROOT = BASE;
while (!fs.existsSync(path.join(GIT_ROOT, ".git")) && GIT_ROOT !== "/") {
  GIT_ROOT = path.join(GIT_ROOT, "../");
}
if (GIT_ROOT === "/") {
  // eslint-disable-next-line no-undef
  console.log("not found");
  // eslint-disable-next-line no-undef
  process.exit(1);
}
const GIT_HASH = GIT_ROOT === "/" ? undefined : git_hash();

let _package = JSON.parse(fs.readFileSync(path.join(BASE, "package.json")));

function git_hash() {
  const rev = fs
    .readFileSync(path.join(GIT_ROOT, ".git", "HEAD"))
    .toString()
    .trim()
    .split(/.*[: ]/)
    .slice(-1)[0];
  if (rev.indexOf("/") === -1) {
    return rev;
  } else {
    return fs.readFileSync(path.join(GIT_ROOT, ".git", rev)).toString().trim();
  }
}

const buildConfigBase = {
  outdir: "lib",
  bundle: true,
  minify: false,
  target: ["es2021"],
  loader: {
    ".key": "text",
    ".crt": "text",
    ".html": "text",
    ".svg": "dataurl",
  },
  sourcemap: true,
  define: {
    __VERSION__: `"${_package.version}"`,
    __GIT_HASH__: `"${GIT_HASH}"`,
  },
};

/**
 * Build time libraries, under node runtime
 */
const buildConfigBuild = {
  ...buildConfigBase,
  entryPoints: ["src/index.build.ts"],
  outExtension: {
    ".js": ".mjs",
  },
  format: "esm",
  platform: "node",
  external: ["esbuild"],
  // https://github.com/evanw/esbuild/issues/1921
  // How to fix "Dynamic require of "os" is not supported"
  // esbuild cannot convert external "static" commonjs require statements to static esm imports
  banner: {
    js: `
    import { fileURLToPath } from 'url';
    import { createRequire as topLevelCreateRequire } from 'module';
    const require = topLevelCreateRequire(import.meta.url);
    const __filename = fileURLToPath(import.meta.url);
    const __dirname = path.dirname(__filename);
`,
  },
};

/**
 * Development libraries, under node runtime
 */
const buildConfigTesting = {
  ...buildConfigBase,
  entryPoints: ["src/index.testing.ts"],
  outExtension: {
    ".js": ".mjs",
  },
  format: "esm",
  platform: "browser",
  external: ["preact", "@gnu-taler/taler-util", "jed", "swr", "axios"],
  jsxFactory: "h",
  jsxFragment: "Fragment",
};

/**
 * Testing libraries, under node runtime
 */
const buildConfigNode = {
  ...buildConfigBase,
  entryPoints: ["src/index.node.ts", "src/cli.ts"],
  outExtension: {
    ".js": ".cjs",
  },
  format: "cjs",
  platform: "node",
  external: ["preact"],
};

/**
 * Support libraries, under browser runtime
 */
const buildConfigBrowser = {
  ...buildConfigBase,
  entryPoints: [
    "src/tests/mock.ts",
    "src/tests/swr.ts",
    "src/index.browser.ts",
    "src/live-reload.ts",
    "src/stories.tsx",
  ],
  outExtension: {
    ".js": ".mjs",
  },
  format: "esm",
  platform: "browser",
  external: ["preact", "@gnu-taler/taler-util", "jed", "swr", "axios"],
  jsxFactory: "h",
  jsxFragment: "Fragment",
};

[
  buildConfigNode,
  buildConfigBrowser,
  buildConfigBuild,
  buildConfigTesting,
].forEach((config) => {
  esbuild.build(config).catch((e) => {
    // eslint-disable-next-line no-undef
    console.log(e);
    // eslint-disable-next-line no-undef
    process.exit(1);
  });
});