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import type { Chapter, ValuesPerDay, CalendarYearsData } from "~/types";
import { convertToCalendarYearData } from "./calendar";
/**
* Checks if a chapter should be included based on the given conditions.
*
* @param {Chapter} chapter - The chapter to check.
* @returns {boolean} - `true` if the chapter should be included, `false`
* otherwise.
*/
export const shouldIncludeChapter = (chapter: Chapter): boolean => {
const shouldShow = chapter.meta.show === true;
const hasValidWebNovelRef = (chapter.partOf.webNovel?.ref ?? 0) > 0;
const hasValidPublishedDate = isMatch(
chapter.partOf.webNovel?.published ?? "",
"yyyy-MM-dd'T'HH:mm:ssXXX"
);
return shouldShow && hasValidWebNovelRef && hasValidPublishedDate;
};
/** The return data from the `convertChaptersToMapping` function. */
export interface ConvertChaptersToMappingOutput {
/** This maps a date string to the number of words written on that day. */
mapping: ValuesPerDay;
/** The minimum year in the dataset. */
minYear: number;
/** The maximum year in the dataset. */
maxYear: number;
/** The minimum value in the dataset. */
minValue: number;
/** The maximum value in the dataset. */
maxValue: number;
}
/**
* Converts an array of `Chapter` objects to a `ConvertChaptersToMappingOutput`.
*
* @param {Chapter[]} chapters - The array of `Chapter` objects.
* @returns {ConvertChaptersToMappingOutput} - The output of the conversion.
*/
export const convertChaptersToMapping = (
chapters: Chapter[]
): ConvertChaptersToMappingOutput => {
const mapping: ValuesPerDay = new Map();
let minYear = Number.POSITIVE_INFINITY;
let maxYear = Number.NEGATIVE_INFINITY;
let minValue = Number.POSITIVE_INFINITY;
let maxValue = Number.NEGATIVE_INFINITY;
for (const chapter of chapters) {
if (!shouldIncludeChapter(chapter)) {
continue;
}
const publishedDate = chapter.partOf.webNovel?.published ?? "";
const totalWords = chapter.partOf.webNovel?.totalWords ?? 0;
if (publishedDate) {
const date = parseISO(publishedDate);
const dateKey = formatISO(date, {
representation: "date",
});
const existingWordCount = mapping.get(dateKey) ?? 0;
const newWordCount = existingWordCount + totalWords;
mapping.set(dateKey, newWordCount);
const year = date.getFullYear();
minYear = Math.min(minYear, year);
maxYear = Math.max(maxYear, year);
minValue = Math.min(minValue, newWordCount);
maxValue = Math.max(maxValue, newWordCount);
}
}
return { mapping, minYear, maxYear, minValue, maxValue };
};
/** The return data from the `convertChaptersToCalendarYearData` function. */
export interface ConvertChaptersToCalendarYearDataOutput {
/** The list of word counts per calendar year. */
data: CalendarYearsData;
/** The minimum year in the dataset. */
minYear: number;
/** The maximum year in the dataset. */
maxYear: number;
/** The minimum value in the dataset. */
minValue: number;
/** The maximum value in the dataset. */
maxValue: number;
}
/**
* Converts an array of `Chapter` objects to a
* `ConvertChaptersToCalendarYearDataOutput` object.
*
* @param {Chapter[]} chapters - The array of `Chapter` objects.
* @returns {ConvertChaptersToCalendarYearDataOutput} - The output of the
* conversion.
*/
export const convertChaptersToCalendarYearData = (
chapters: Chapter[]
): ConvertChaptersToCalendarYearDataOutput => {
const { mapping, minYear, maxYear, minValue, maxValue } =
convertChaptersToMapping(chapters);
const calendarYearsData = convertToCalendarYearData(mapping);
return {
data: calendarYearsData,
minYear,
maxYear,
minValue,
maxValue,
};
};
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