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import path from "node:path";

import { TemplatePath } from "@11ty/eleventy-utils";

class TemplateFileSlug {

constructor(inputPath, extensionMap, eleventyConfig) {

let inputDir = eleventyConfig.directories.input;

if (inputDir) {

inputPath = TemplatePath.stripLeadingSubPath(inputPath, inputDir);

}

this.inputPath = inputPath;

this.cleanInputPath = TemplatePath.stripLeadingDotSlash(inputPath);

let dirs = this.cleanInputPath.split("/");

this.dirs = dirs;

this.dirs.pop();

this.parsed = path.parse(inputPath);

this.filenameNoExt = extensionMap.removeTemplateExtension(this.parsed.base);

}

// `page.filePathStem` see https://v3.11ty.dev/docs/data-eleventy-supplied/#page-variable

getFullPathWithoutExtension() {

return "/" + TemplatePath.join(...this.dirs, this._getRawSlug());

}

_getRawSlug() {

let slug = this.filenameNoExt;

return this._stripDateFromSlug(slug);

}

/** Removes dates in the format of YYYY-MM-DD from a given slug string candidate. */

_stripDateFromSlug(slug) {

let reg = slug.match(/\d{4}-\d{2}-\d{2}-(.*)/);

if (reg) {

return reg[1];

}

return slug;

}

// `page.fileSlug` see https://v3.11ty.dev/docs/data-eleventy-supplied/#page-variable

getSlug() {

let rawSlug = this._getRawSlug();

if (rawSlug === "index") {

if (!this.dirs.length) {

return "";

}

let lastDir = this.dirs[this.dirs.length - 1];

return this._stripDateFromSlug(lastDir);

}

return rawSlug;

}

}

export default TemplateFileSlug;