/**
 * @since 4.0.0
 */
import * as Context from "./Context.js";
import * as Effect from "./Effect.js";
import { identity } from "./Function.js";
import * as Layer from "./Layer.js";
import { BadArgument } from "./PlatformError.js";
/**
 * @since 4.0.0
 */
export const TypeId = "~effect/platform/Path";
/**
 * @since 4.0.0
 * @category tag
 * @example
 * ```ts
 * import { Effect, Layer, Path } from "effect"
 *
 * // Create a custom path implementation
 * const customPath: Path.Path = {
 *   [Path.TypeId]: Path.TypeId,
 *   sep: "/",
 *   basename: (path: string, suffix?: string) => {
 *     const base = path.split("/").pop() || ""
 *     return suffix && base.endsWith(suffix)
 *       ? base.slice(0, -suffix.length)
 *       : base
 *   },
 *   dirname: (path: string) => path.split("/").slice(0, -1).join("/") || "/",
 *   extname: (path: string) => {
 *     const match = path.match(/\.[^.]*$/)
 *     return match ? match[0] : ""
 *   },
 *   format: (pathObject) => {
 *     const dir = pathObject.dir || ""
 *     const name = pathObject.name || ""
 *     const ext = pathObject.ext || ""
 *     return dir ? `${dir}/${name}${ext}` : `${name}${ext}`
 *   },
 *   fromFileUrl: (url: URL) => Effect.succeed(url.pathname),
 *   isAbsolute: (path: string) => path.startsWith("/"),
 *   join: (...paths: ReadonlyArray<string>) => paths.join("/"),
 *   normalize: (path: string) => path.replace(/\/+/g, "/"),
 *   parse: (path: string) => ({
 *     root: path.startsWith("/") ? "/" : "",
 *     dir: path.split("/").slice(0, -1).join("/") || "/",
 *     base: path.split("/").pop() || "",
 *     ext: path.match(/\.[^.]*$/)?.[0] || "",
 *     name: path.split("/").pop()?.replace(/\.[^.]*$/, "") || ""
 *   }),
 *   relative: (from: string, to: string) => to.replace(from, ""),
 *   resolve: (...pathSegments: ReadonlyArray<string>) => pathSegments.join("/"),
 *   toFileUrl: (path: string) => Effect.succeed(new URL(`file://${path}`)),
 *   toNamespacedPath: (path: string) => path
 * }
 *
 * // Provide the path service
 * const customPathLayer = Layer.succeed(Path.Path)(customPath)
 *
 * const program = Effect.gen(function*() {
 *   const path = yield* Path.Path
 *   const joined = path.join("home", "user", "file.txt")
 *   console.log(joined) // "home/user/file.txt"
 * })
 *
 * // Run with custom path implementation
 * const result = Effect.provide(program, customPathLayer)
 * ```
 */
export const Path = /*#__PURE__*/Context.Service("effect/Path");
/**
 * The following functions are adapted from the Node.js source code:
 * https://github.com/nodejs/node/blob/main/lib/internal/url.js
 *
 * The following license applies to these functions:
 * - MIT
 */
// Resolves . and .. elements in a path with directory names
function normalizeStringPosix(path, allowAboveRoot) {
  let res = "";
  let lastSegmentLength = 0;
  let lastSlash = -1;
  let dots = 0;
  let code;
  for (let i = 0; i <= path.length; ++i) {
    if (i < path.length) {
      code = path.charCodeAt(i);
    } else if (code === 47 /*/*/) {
      break;
    } else {
      code = 47; /*/*/
    }
    if (code === 47 /*/*/) {
      if (lastSlash === i - 1 || dots === 1) {
        // NOOP
      } else if (lastSlash !== i - 1 && dots === 2) {
        if (res.length < 2 || lastSegmentLength !== 2 || res.charCodeAt(res.length - 1) !== 46 /*.*/ || res.charCodeAt(res.length - 2) !== 46 /*.*/) {
          if (res.length > 2) {
            const lastSlashIndex = res.lastIndexOf("/");
            if (lastSlashIndex !== res.length - 1) {
              if (lastSlashIndex === -1) {
                res = "";
                lastSegmentLength = 0;
              } else {
                res = res.slice(0, lastSlashIndex);
                lastSegmentLength = res.length - 1 - res.lastIndexOf("/");
              }
              lastSlash = i;
              dots = 0;
              continue;
            }
          } else if (res.length === 2 || res.length === 1) {
            res = "";
            lastSegmentLength = 0;
            lastSlash = i;
            dots = 0;
            continue;
          }
        }
        if (allowAboveRoot) {
          if (res.length > 0) {
            res += "/..";
          } else {
            res = "..";
          }
          lastSegmentLength = 2;
        }
      } else {
        if (res.length > 0) {
          res += "/" + path.slice(lastSlash + 1, i);
        } else {
          res = path.slice(lastSlash + 1, i);
        }
        lastSegmentLength = i - lastSlash - 1;
      }
      lastSlash = i;
      dots = 0;
    } else if (code === 46 /*.*/ && dots !== -1) {
      ++dots;
    } else {
      dots = -1;
    }
  }
  return res;
}
function _format(sep, pathObject) {
  const dir = pathObject.dir || pathObject.root;
  const base = pathObject.base || (pathObject.name || "") + (pathObject.ext || "");
  if (!dir) {
    return base;
  }
  if (dir === pathObject.root) {
    return dir + base;
  }
  return dir + sep + base;
}
function fromFileUrl(url) {
  if (url.protocol !== "file:") {
    return Effect.fail(new BadArgument({
      module: "Path",
      method: "fromFileUrl",
      description: "URL must be of scheme file"
    }));
  } else if (url.hostname !== "") {
    return Effect.fail(new BadArgument({
      module: "Path",
      method: "fromFileUrl",
      description: "Invalid file URL host"
    }));
  }
  const pathname = url.pathname;
  for (let n = 0; n < pathname.length; n++) {
    if (pathname[n] === "%") {
      const third = pathname.codePointAt(n + 2) | 0x20;
      if (pathname[n + 1] === "2" && third === 102) {
        return Effect.fail(new BadArgument({
          module: "Path",
          method: "fromFileUrl",
          description: "must not include encoded / characters"
        }));
      }
    }
  }
  return Effect.succeed(decodeURIComponent(pathname));
}
const resolve = function resolve() {
  let resolvedPath = "";
  let resolvedAbsolute = false;
  let cwd = undefined;
  for (let i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
    let path;
    if (i >= 0) {
      path = arguments[i];
    } else {
      const process = globalThis.process;
      if (cwd === undefined && "process" in globalThis && typeof process === "object" && process !== null && typeof process.cwd === "function") {
        cwd = process.cwd();
      }
      path = cwd;
    }
    // Skip empty entries
    if (path.length === 0) {
      continue;
    }
    resolvedPath = path + "/" + resolvedPath;
    resolvedAbsolute = path.charCodeAt(0) === 47; /*/*/
  }
  // At this point the path should be resolved to a full absolute path, but
  // handle relative paths to be safe (might happen when process.cwd() fails)
  // Normalize the path
  resolvedPath = normalizeStringPosix(resolvedPath, !resolvedAbsolute);
  if (resolvedAbsolute) {
    if (resolvedPath.length > 0) {
      return "/" + resolvedPath;
    } else {
      return "/";
    }
  } else if (resolvedPath.length > 0) {
    return resolvedPath;
  } else {
    return ".";
  }
};
const CHAR_FORWARD_SLASH = 47;
function toFileUrl(filepath) {
  const outURL = new URL("file://");
  let resolved = resolve(filepath);
  // path.resolve strips trailing slashes so we must add them back
  const filePathLast = filepath.charCodeAt(filepath.length - 1);
  if (filePathLast === CHAR_FORWARD_SLASH && resolved[resolved.length - 1] !== "/") {
    resolved += "/";
  }
  outURL.pathname = encodePathChars(resolved);
  return Effect.succeed(outURL);
}
const percentRegExp = /%/g;
const backslashRegExp = /\\/g;
const newlineRegExp = /\n/g;
const carriageReturnRegExp = /\r/g;
const tabRegExp = /\t/g;
function encodePathChars(filepath) {
  if (filepath.includes("%")) {
    filepath = filepath.replace(percentRegExp, "%25");
  }
  if (filepath.includes("\\")) {
    filepath = filepath.replace(backslashRegExp, "%5C");
  }
  if (filepath.includes("\n")) {
    filepath = filepath.replace(newlineRegExp, "%0A");
  }
  if (filepath.includes("\r")) {
    filepath = filepath.replace(carriageReturnRegExp, "%0D");
  }
  if (filepath.includes("\t")) {
    filepath = filepath.replace(tabRegExp, "%09");
  }
  return filepath;
}
const posixImpl = /*#__PURE__*/Path.of({
  [TypeId]: TypeId,
  resolve,
  normalize(path) {
    if (path.length === 0) return ".";
    const isAbsolute = path.charCodeAt(0) === 47; /*/*/
    const trailingSeparator = path.charCodeAt(path.length - 1) === 47; /*/*/
    // Normalize the path
    path = normalizeStringPosix(path, !isAbsolute);
    if (path.length === 0 && !isAbsolute) path = ".";
    if (path.length > 0 && trailingSeparator) path += "/";
    if (isAbsolute) return "/" + path;
    return path;
  },
  isAbsolute(path) {
    return path.length > 0 && path.charCodeAt(0) === 47; /*/*/
  },
  join() {
    if (arguments.length === 0) {
      return ".";
    }
    let joined;
    for (let i = 0; i < arguments.length; ++i) {
      const arg = arguments[i];
      if (arg.length > 0) {
        if (joined === undefined) {
          joined = arg;
        } else {
          joined += "/" + arg;
        }
      }
    }
    if (joined === undefined) {
      return ".";
    }
    return posixImpl.normalize(joined);
  },
  relative(from, to) {
    if (from === to) return "";
    from = posixImpl.resolve(from);
    to = posixImpl.resolve(to);
    if (from === to) return "";
    // Trim any leading backslashes
    let fromStart = 1;
    for (; fromStart < from.length; ++fromStart) {
      if (from.charCodeAt(fromStart) !== 47 /*/*/) {
        break;
      }
    }
    const fromEnd = from.length;
    const fromLen = fromEnd - fromStart;
    // Trim any leading backslashes
    let toStart = 1;
    for (; toStart < to.length; ++toStart) {
      if (to.charCodeAt(toStart) !== 47 /*/*/) {
        break;
      }
    }
    const toEnd = to.length;
    const toLen = toEnd - toStart;
    // Compare paths to find the longest common path from root
    const length = fromLen < toLen ? fromLen : toLen;
    let lastCommonSep = -1;
    let i = 0;
    for (; i <= length; ++i) {
      if (i === length) {
        if (toLen > length) {
          if (to.charCodeAt(toStart + i) === 47 /*/*/) {
            // We get here if `from` is the exact base path for `to`.
            // For example: from='/foo/bar'; to='/foo/bar/baz'
            return to.slice(toStart + i + 1);
          } else if (i === 0) {
            // We get here if `from` is the root
            // For example: from='/'; to='/foo'
            return to.slice(toStart + i);
          }
        } else if (fromLen > length) {
          if (from.charCodeAt(fromStart + i) === 47 /*/*/) {
            // We get here if `to` is the exact base path for `from`.
            // For example: from='/foo/bar/baz'; to='/foo/bar'
            lastCommonSep = i;
          } else if (i === 0) {
            // We get here if `to` is the root.
            // For example: from='/foo'; to='/'
            lastCommonSep = 0;
          }
        }
        break;
      }
      const fromCode = from.charCodeAt(fromStart + i);
      const toCode = to.charCodeAt(toStart + i);
      if (fromCode !== toCode) {
        break;
      } else if (fromCode === 47 /*/*/) {
        lastCommonSep = i;
      }
    }
    let out = "";
    // Generate the relative path based on the path difference between `to`
    // and `from`
    for (i = fromStart + lastCommonSep + 1; i <= fromEnd; ++i) {
      if (i === fromEnd || from.charCodeAt(i) === 47 /*/*/) {
        if (out.length === 0) {
          out += "..";
        } else {
          out += "/..";
        }
      }
    }
    // Lastly, append the rest of the destination (`to`) path that comes after
    // the common path parts
    if (out.length > 0) {
      return out + to.slice(toStart + lastCommonSep);
    } else {
      toStart += lastCommonSep;
      if (to.charCodeAt(toStart) === 47 /*/*/) {
        ++toStart;
      }
      return to.slice(toStart);
    }
  },
  dirname(path) {
    if (path.length === 0) return ".";
    let code = path.charCodeAt(0);
    const hasRoot = code === 47; /*/*/
    let end = -1;
    let matchedSlash = true;
    for (let i = path.length - 1; i >= 1; --i) {
      code = path.charCodeAt(i);
      if (code === 47 /*/*/) {
        if (!matchedSlash) {
          end = i;
          break;
        }
      } else {
        // We saw the first non-path separator
        matchedSlash = false;
      }
    }
    if (end === -1) return hasRoot ? "/" : ".";
    if (hasRoot && end === 1) return "//";
    return path.slice(0, end);
  },
  basename(path, ext) {
    let start = 0;
    let end = -1;
    let matchedSlash = true;
    let i;
    if (ext !== undefined && ext.length > 0 && ext.length <= path.length) {
      if (ext.length === path.length && ext === path) return "";
      let extIdx = ext.length - 1;
      let firstNonSlashEnd = -1;
      for (i = path.length - 1; i >= 0; --i) {
        const code = path.charCodeAt(i);
        if (code === 47 /*/*/) {
          // If we reached a path separator that was not part of a set of path
          // separators at the end of the string, stop now
          if (!matchedSlash) {
            start = i + 1;
            break;
          }
        } else {
          if (firstNonSlashEnd === -1) {
            // We saw the first non-path separator, remember this index in case
            // we need it if the extension ends up not matching
            matchedSlash = false;
            firstNonSlashEnd = i + 1;
          }
          if (extIdx >= 0) {
            // Try to match the explicit extension
            if (code === ext.charCodeAt(extIdx)) {
              if (--extIdx === -1) {
                // We matched the extension, so mark this as the end of our path
                // component
                end = i;
              }
            } else {
              // Extension does not match, so our result is the entire path
              // component
              extIdx = -1;
              end = firstNonSlashEnd;
            }
          }
        }
      }
      if (start === end) end = firstNonSlashEnd;else if (end === -1) end = path.length;
      return path.slice(start, end);
    } else {
      for (i = path.length - 1; i >= 0; --i) {
        if (path.charCodeAt(i) === 47 /*/*/) {
          // If we reached a path separator that was not part of a set of path
          // separators at the end of the string, stop now
          if (!matchedSlash) {
            start = i + 1;
            break;
          }
        } else if (end === -1) {
          // We saw the first non-path separator, mark this as the end of our
          // path component
          matchedSlash = false;
          end = i + 1;
        }
      }
      if (end === -1) return "";
      return path.slice(start, end);
    }
  },
  extname(path) {
    let startDot = -1;
    let startPart = 0;
    let end = -1;
    let matchedSlash = true;
    // Track the state of characters (if any) we see before our first dot and
    // after any path separator we find
    let preDotState = 0;
    for (let i = path.length - 1; i >= 0; --i) {
      const code = path.charCodeAt(i);
      if (code === 47 /*/*/) {
        // If we reached a path separator that was not part of a set of path
        // separators at the end of the string, stop now
        if (!matchedSlash) {
          startPart = i + 1;
          break;
        }
        continue;
      }
      if (end === -1) {
        // We saw the first non-path separator, mark this as the end of our
        // extension
        matchedSlash = false;
        end = i + 1;
      }
      if (code === 46 /*.*/) {
        // If this is our first dot, mark it as the start of our extension
        if (startDot === -1) {
          startDot = i;
        } else if (preDotState !== 1) {
          preDotState = 1;
        }
      } else if (startDot !== -1) {
        // We saw a non-dot and non-path separator before our dot, so we should
        // have a good chance at having a non-empty extension
        preDotState = -1;
      }
    }
    if (startDot === -1 || end === -1 ||
    // We saw a non-dot character immediately before the dot
    preDotState === 0 ||
    // The (right-most) trimmed path component is exactly '..'
    preDotState === 1 && startDot === end - 1 && startDot === startPart + 1) {
      return "";
    }
    return path.slice(startDot, end);
  },
  format: function format(pathObject) {
    if (pathObject === null || typeof pathObject !== "object") {
      throw new TypeError("The \"pathObject\" argument must be of type Object. Received type " + typeof pathObject);
    }
    return _format("/", pathObject);
  },
  parse(path) {
    const ret = {
      root: "",
      dir: "",
      base: "",
      ext: "",
      name: ""
    };
    if (path.length === 0) return ret;
    let code = path.charCodeAt(0);
    const isAbsolute = code === 47; /*/*/
    let start;
    if (isAbsolute) {
      ret.root = "/";
      start = 1;
    } else {
      start = 0;
    }
    let startDot = -1;
    let startPart = 0;
    let end = -1;
    let matchedSlash = true;
    let i = path.length - 1;
    // Track the state of characters (if any) we see before our first dot and
    // after any path separator we find
    let preDotState = 0;
    // Get non-dir info
    for (; i >= start; --i) {
      code = path.charCodeAt(i);
      if (code === 47 /*/*/) {
        // If we reached a path separator that was not part of a set of path
        // separators at the end of the string, stop now
        if (!matchedSlash) {
          startPart = i + 1;
          break;
        }
        continue;
      }
      if (end === -1) {
        // We saw the first non-path separator, mark this as the end of our
        // extension
        matchedSlash = false;
        end = i + 1;
      }
      if (code === 46 /*.*/) {
        // If this is our first dot, mark it as the start of our extension
        if (startDot === -1) startDot = i;else if (preDotState !== 1) preDotState = 1;
      } else if (startDot !== -1) {
        // We saw a non-dot and non-path separator before our dot, so we should
        // have a good chance at having a non-empty extension
        preDotState = -1;
      }
    }
    if (startDot === -1 || end === -1 ||
    // We saw a non-dot character immediately before the dot
    preDotState === 0 ||
    // The (right-most) trimmed path component is exactly '..'
    preDotState === 1 && startDot === end - 1 && startDot === startPart + 1) {
      if (end !== -1) {
        if (startPart === 0 && isAbsolute) ret.base = ret.name = path.slice(1, end);else ret.base = ret.name = path.slice(startPart, end);
      }
    } else {
      if (startPart === 0 && isAbsolute) {
        ret.name = path.slice(1, startDot);
        ret.base = path.slice(1, end);
      } else {
        ret.name = path.slice(startPart, startDot);
        ret.base = path.slice(startPart, end);
      }
      ret.ext = path.slice(startDot, end);
    }
    if (startPart > 0) ret.dir = path.slice(0, startPart - 1);else if (isAbsolute) ret.dir = "/";
    return ret;
  },
  sep: "/",
  fromFileUrl,
  toFileUrl,
  toNamespacedPath: identity
});
/**
 * @since 4.0.0
 * @category Layers
 */
export const layer = /*#__PURE__*/Layer.succeed(Path)(posixImpl);
//# sourceMappingURL=Path.js.map