import { resolveSync, which } from "bun";
import { describe, expect, it } from "bun:test";
import { readFileSync, realpathSync } from "fs";
import { basename } from "path";

it("process", () => {
  // this property isn't implemented yet but it should at least return a string
  const isNode = !process.isBun;

  if (!isNode && process.title !== "bun") throw new Error("process.title is not 'bun'");

  if (typeof process.env.USER !== "string") throw new Error("process.env is not an object");

  if (process.env.USER.length === 0) throw new Error("process.env is missing a USER property");

  if (process.platform !== "darwin" && process.platform !== "linux") throw new Error("process.platform is invalid");

  if (isNode) throw new Error("process.isBun is invalid");

  // partially to test it doesn't crash due to various strange types
  process.env.BACON = "yummy";
  if (process.env.BACON !== "yummy") {
    throw new Error("process.env is not writable");
  }

  delete process.env.BACON;
  if (typeof process.env.BACON !== "undefined") {
    throw new Error("process.env is not deletable");
  }

  process.env.BACON = "yummy";
  if (process.env.BACON !== "yummy") {
    throw new Error("process.env is not re-writable");
  }
  if (!JSON.stringify(process.env)) {
    throw new Error("process.env is not serializable");
  }

  if (typeof JSON.parse(JSON.stringify(process.env)).toJSON !== "undefined") {
    throw new Error("process.env should call toJSON to hide its internal state");
  }

  var { env, ...proces } = process;
  console.log(proces);

  console.log("CWD", process.cwd());
  console.log("SET CWD", process.chdir("../"));
  console.log("CWD", process.cwd());
});

it("process.hrtime()", () => {
  const start = process.hrtime();
  const end = process.hrtime(start);
  const end2 = process.hrtime();
  expect(end[0]).toBe(0);
  expect(end2[1] > start[1]).toBe(true);
});

it("process.hrtime.bigint()", () => {
  const start = process.hrtime.bigint();
  const end = process.hrtime.bigint();
  expect(end > start).toBe(true);
});

it("process.release", () => {
  expect(process.release.name).toBe("bun");
  expect(process.release.sourceUrl).toBe(
    `https://github.com/oven-sh/bun/release/bun-v${process.versions.bun}/bun-${process.platform}-${
      { arm64: "aarch64", x64: "x64" }[process.arch] || process.arch
    }.zip`,
  );
});

it("process.env", () => {
  process.env["LOL SMILE UTF16 😂"] = "😂";
  expect(process.env["LOL SMILE UTF16 😂"]).toBe("😂");
  delete process.env["LOL SMILE UTF16 😂"];
  expect(process.env["LOL SMILE UTF16 😂"]).toBe(undefined);

  process.env["LOL SMILE latin1 <abc>"] = "<abc>";
  expect(process.env["LOL SMILE latin1 <abc>"]).toBe("<abc>");
  delete process.env["LOL SMILE latin1 <abc>"];
  expect(process.env["LOL SMILE latin1 <abc>"]).toBe(undefined);
});

it("process.env is spreadable and editable", () => {
  process.env["LOL SMILE UTF16 😂"] = "😂";
  const { "LOL SMILE UTF16 😂": lol, ...rest } = process.env;
  expect(lol).toBe("😂");
  delete process.env["LOL SMILE UTF16 😂"];
  expect(rest).toEqual(process.env);
  const orig = (getter => process.env[getter])("USER");
  expect(process.env).toEqual(process.env);
  eval(`globalThis.process.env.USER = 'bun';`);
  expect(eval(`globalThis.process.env.USER`)).toBe("bun");
  expect(eval(`globalThis.process.env.USER = "${orig}"`)).toBe(orig);
});

it("process.version starts with v", () => {
  expect(process.version.startsWith("v")).toBeTruthy();
});

it("process.argv0", () => {
  expect(basename(process.argv0)).toBe(basename(process.argv[0]));
});

it("process.execPath", () => {
  expect(process.execPath).not.toBe(basename(process.argv0));
  expect(which(process.execPath)).not.toBeNull();
});

it("process.uptime()", () => {
  expect(process.uptime()).toBeGreaterThan(0);
  expect(Math.floor(process.uptime())).toBe(Math.floor(performance.now() / 1000));
});

it("process.umask()", () => {
  const orig = process.umask(777);
  expect(orig).toBeGreaterThan(0);
  expect(process.umask(orig)).toBe(777);
});

it("process.versions", () => {
  // Generate a list of all the versions in the versions object
  // example:
  // pub const boringssl = "b275c5ce1c88bc06f5a967026d3c0ce1df2be815";
  // pub const libarchive = "dc321febde83dd0f31158e1be61a7aedda65e7a2";
  // pub const mimalloc = "3c7079967a269027e438a2aac83197076d9fe09d";
  // pub const picohttpparser = "066d2b1e9ab820703db0837a7255d92d30f0c9f5";
  // pub const uws = "70b1b9fc1341e8b791b42c5447f90505c2abe156";
  // pub const webkit = "60d11703a533fd694cd1d6ddda04813eecb5d69f";
  // pub const zlib = "885674026394870b7e7a05b7bf1ec5eb7bd8a9c0";
  // pub const tinycc = "2d3ad9e0d32194ad7fd867b66ebe218dcc8cb5cd";
  // pub const lolhtml = "2eed349dcdfa4ff5c19fe7c6e501cfd687601033";
  // pub const c_ares = "0e7a5dee0fbb04080750cf6eabbe89d8bae87faa";
  // pub const usockets = "fafc241e8664243fc0c51d69684d5d02b9805134";
  const versions = Object.fromEntries(
    readFileSync(import.meta.dir + "/../../src/generated_versions_list.zig", "utf8")
      .split("\n")
      .filter(line => line.startsWith("pub const") && !line.includes("zig") && line.includes(' = "'))
      .map(line => line.split(" = "))
      .map(([name, hash]) => [name.slice(9).trim(), hash.slice(1, -2)]),
  );
  versions.uwebsockets = versions.uws;
  delete versions.uws;
  versions["ares"] = versions.c_ares;
  delete versions.c_ares;

  for (const name in versions) {
    expect(process.versions).toHaveProperty(name);
    expect(process.versions[name]).toBe(versions[name]);
  }
});

it("process.config", () => {
  expect(process.config).toEqual({
    variables: {
      v8_enable_i8n_support: 1,
    },
    target_defaults: {},
  });
});

it("process.emitWarning", () => {
  process.emitWarning("-- Testing process.emitWarning --");
  var called = 0;
  process.on("warning", err => {
    called++;
    expect(err.message).toBe("-- Testing process.on('warning') --");
  });
  process.emitWarning("-- Testing process.on('warning') --");
  expect(called).toBe(1);
  expect(process.off("warning")).toBe(process);
  process.emitWarning("-- Testing process.on('warning') --");
  expect(called).toBe(1);
});

it("process.execArgv", () => {
  expect(process.execArgv instanceof Array).toBe(true);
});

it("process.binding", () => {
  expect(() => process.binding("buffer")).toThrow();
});