import { Scrubbers } from "./Scrubbers";
import type { Scrubber } from "./Scrubbers";

class DateFormat {
  public regex: RegExp;
  public examples: string[];

  constructor(regex: RegExp, examples: string[]) {
    this.regex = regex;
    this.examples = examples;
  }
}

function __(regExp: RegExp, strings: string[]): DateFormat {
  return new DateFormat(regExp, strings);
}

export class DateScrubber {
  static getSupportedFormats(): DateFormat[] {
    return [
      __(/[a-zA-Z]{3} [a-zA-Z]{3} \d{2} \d{2}:\d{2}:\d{2}/g, [
        "Tue May 13 16:30:00",
      ]),
      __(
        /[a-zA-Z]{3} [a-zA-Z]{3} \d{2} \d{2}:\d{2}:\d{2} [a-zA-Z]{3,4} \d{4}/g,
        ["Wed Nov 17 22:28:33 EET 2021"],
      ),
      __(/[a-zA-Z]{3} [a-zA-Z]{3} \d{2} \d{4} \d{2}:\d{2}:\d{2}.\d{3}/g, [
        "Tue May 13 2014 23:30:00.789",
      ]),
      __(/[a-zA-Z]{3} [a-zA-Z]{3} \d{2} \d{2}:\d{2}:\d{2} -\d{4} \d{4}/g, [
        "Tue May 13 16:30:00 -0800 2014",
      ]),
      __(/\d{2} [a-zA-Z]{3} \d{4} \d{2}:\d{2}:\d{2},\d{3}/g, [
        "13 May 2014 23:50:49,999",
      ]),
      __(
        /[a-zA-Z]{3} \d{2}, \d{4} \d{2}:\d{2}:\d{2} [a-zA-Z]{2} [a-zA-Z]{3}/g,
        ["May 13, 2014 11:30:00 PM PST"],
      ),
      __(/\d{2}:\d{2}:\d{2}/g, ["23:30:00"]),
      __(/\d{4}\/\d{2}\/\d{2} \d{2}:\d{2}:\d{2}.\d{2}\d/g, [
        "2014/05/13 16:30:59.786",
      ]),
      __(/\d{4}-\d{1,2}-\d{1,2}T\d{1,2}:\d{2}Z/g, [
        "2020-9-10T08:07Z",
        "2020-09-9T08:07Z",
        "2020-09-10T8:07Z",
        "2020-09-10T08:07Z",
      ]),
      __(/\d{4}-\d{1,2}-\d{1,2}T\d{1,2}:\d{2}:\d{2}Z/g, [
        "2020-09-10T08:07:89Z",
      ]),
      __(/\d{4}-\d{1,2}-\d{1,2}T\d{1,2}:\d{2}\:\d{2}\.\d{3}Z/g, [
        "2020-09-10T01:23:45.678Z",
      ]),
      __(/\d{8}T\d{6}Z/g, ["20210505T091112Z"]),
      __(
        /[a-zA-Z]{3}, \d{2} [a-zA-Z]{3} \d{4} \d{2}:\d{2}:\d{2} [a-zA-Z]{3}/g,
        ["Sun, 06 Nov 2022 11:23:20 GMT"],
      ),
    ];
  }

  static getScrubberFor(example: string): Scrubber {
    let supported = "";
    for (let format of DateScrubber.getSupportedFormats()) {
      const scrubber = this.create(format.regex);
      const scrubbed = scrubber(example);
      if (scrubbed === "<date_1>") {
        return scrubber;
      }
      supported += `    ${format.examples[0]} | ${format.regex} \n`;
    }
    throw new Error(
      `No match found for '${example}'.\n Feel free to add your date at https://github.com/approvals/Approvals.NodeJS/issues/139 \n Current supported formats are: \n${supported}`,
    );
  }

  public static create(regex: RegExp): Scrubber {
    return Scrubbers.createReqexScrubber(regex, (t) => `<date_${t}>`);
  }
}