📦 colinhacks / zshy

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165import * as fs from "node:fs";
import * as path from "node:path";
import * as ts from "typescript";

export function formatForLog(data: unknown) {
  return JSON.stringify(data, null, 2).split("\n").join("\n   ");
}

// Global logging state
let isSilent = false;

export function setSilent(silent: boolean) {
  isSilent = silent;
}

export const log = {
  prefix: undefined as string | undefined,

  info: function (message: string) {
    if (!isSilent) {
      console.log((this.prefix || "") + message);
    }
  },

  error: function (message: string) {
    if (!isSilent) {
      console.error((this.prefix || "") + message);
    }
  },

  warn: function (message: string) {
    if (!isSilent) {
      console.warn((this.prefix || "") + message);
    }
  },
};

export function isSourceFile(filePath: string): boolean {
  // Declaration files are not source files
  if (filePath.endsWith(".d.ts") || filePath.endsWith(".d.mts") || filePath.endsWith(".d.cts")) {
    return false;
  }

  // TypeScript source files
  return (
    filePath.endsWith(".ts") || filePath.endsWith(".mts") || filePath.endsWith(".cts") || filePath.endsWith(".tsx")
  );
}

export function removeExtension(filePath: string): string {
  return filePath.split(".").slice(0, -1).join(".") || filePath;
}

export function readTsconfig(tsconfigPath: string) {
  // Read and parse tsconfig.json
  const configPath = path.resolve(tsconfigPath);
  const configDir = path.dirname(configPath);

  const configFile = ts.readConfigFile(configPath, ts.sys.readFile);

  if (configFile.error) {
    console.error(
      "Error reading tsconfig.json:",
      ts.formatDiagnostic(configFile.error, {
        getCurrentDirectory: () => configDir,
        getCanonicalFileName: (fileName) => fileName,
        getNewLine: () => ts.sys.newLine,
      })
    );
    process.exit(1);
  }

  // Parse the config with explicit base path
  const parsedConfig = ts.parseJsonConfigFileContent(
    configFile.config,
    {
      ...ts.sys,
      // Override getCurrentDirectory to use the tsconfig directory
      getCurrentDirectory: () => configDir,
    },
    configDir
  );

  if (parsedConfig.errors.length > 0) {
    log.error("Error parsing tsconfig.json:");
    for (const error of parsedConfig.errors) {
      console.error(
        ts.formatDiagnostic(error, {
          getCurrentDirectory: () => configDir,
          getCanonicalFileName: (fileName) => fileName,
          getNewLine: () => ts.sys.newLine,
        })
      );
    }
    process.exit(1);
  }

  if (!parsedConfig.options) {
    log.error("Error reading tsconfig.json#/compilerOptions");
    process.exit(1);
  }
  return parsedConfig.options!;
}

export const jsExtensions: Set<string> = new Set([".js", ".mjs", ".cjs", ".ts", ".mts", ".cts", ".tsx"]);

export function isAssetFile(filePath: string): boolean {
  const ext = path.extname(filePath).toLowerCase();
  if (ext === "") return false;
  return !jsExtensions.has(ext);
}

export const toPosix = (p: string): string => p.replaceAll(path.sep, path.posix.sep);

export const relativePosix = (from: string, to: string): string => {
  const relativePath = path.relative(from, to);
  return toPosix(relativePath);
};

export function isTestFile(filePath: string): boolean {
  const posixPath = toPosix(filePath);

  // Exclude files in __tests__ directories
  if (posixPath.includes("/__tests__/") || posixPath.includes("\\__tests__\\")) {
    return true;
  }

  // Exclude files matching .test.{ext} or .spec.{ext} pattern
  const testPattern = /\.(test|spec)\.(ts|tsx|mts|cts)$/;
  if (testPattern.test(filePath)) {
    return true;
  }

  return false;
}

export function findConfigPath(fileName: string): string | null {
  let resultPath = `./${fileName}`;
  let currentDir = process.cwd();

  while (currentDir !== path.dirname(currentDir)) {
    const candidatePath = path.join(currentDir, fileName);
    if (fs.existsSync(candidatePath)) {
      resultPath = candidatePath;
      break;
    }
    currentDir = path.dirname(currentDir);
  }

  return fs.existsSync(resultPath) ? resultPath : null;
}

export function detectConfigIndentation(fileContents: string): string | number {
  let indent: string | number = 2; // Default to 2 spaces
  const indentMatch = fileContents.match(/^([ \t]+)/m);

  if (indentMatch?.[1]) {
    indent = indentMatch[1];
  } else if (!fileContents.includes("\n")) {
    indent = 0; // minified
  }

  return indent;
}