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/*
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 * tools-info.ts
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 *
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 * Copyright (C) 2022 Posit Software, PBC
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 */
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import { expandPath, safeExistsSync } from "../../core/path.ts";
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import { join } from "../../deno_ral/path.ts";
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import { getenv } from "../../core/env.ts";
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import { existsSync } from "../../deno_ral/fs.ts";
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import { os as platformOs } from "../../deno_ral/platform.ts";
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export function hasTinyTex(): boolean {
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  const binDir = tinyTexBinDir();
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  if (!binDir) {
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    return false;  // No bin directory found
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  }
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  // Check for tlmgr binary (critical package manager)
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  const tlmgrBinary = platformOs === "windows" ? "tlmgr.bat" : "tlmgr";
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  const tlmgrPath = join(binDir, tlmgrBinary);
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  return safeExistsSync(tlmgrPath);
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}
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export function tinyTexInstallDir(): string | undefined {
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  switch (platformOs) {
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    case "windows": {
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      let appDir = getenv("APPDATA", undefined);
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      // use ProgramData if APPDATA is not set or contains spaces or non-ASCII characters
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      if (!appDir || !appDir.match(/^[!-~]+$/)) {
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        appDir = getenv("ProgramData", undefined);
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      }
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      return expandPath(join(appDir, "TinyTeX"));
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    }
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    case "linux":
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      return expandPath("~/.TinyTeX");
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    case "darwin":
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      return expandPath("~/Library/TinyTeX");
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    default:
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      return undefined;
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  }
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}
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export function tinyTexBinDir(): string | undefined {
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  const basePath = tinyTexInstallDir();
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  if (basePath) {
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    switch (platformOs) {
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      case "windows": {
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        // TeX Live 2023 use windows now. Previous version were using win32
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        const winPath = join(basePath, "bin\\win32\\");
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        if (safeExistsSync(winPath)) return winPath;
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        return join(basePath, "bin\\windows\\");
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      }
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      case "linux": {
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        const linuxPath = join(basePath, `bin/${Deno.build.arch}-linux`);
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        if (safeExistsSync(linuxPath)) return linuxPath;
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        return undefined;
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      }
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      case "darwin": {
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        const darwinPath = join(basePath, "bin/universal-darwin");
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        if (safeExistsSync(darwinPath)) return darwinPath;
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        return undefined;
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      }
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      default:
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        return undefined;
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    }
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  } else {
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    return undefined;
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  }
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}
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