import { getEachLatestDate } from "../getEachLatestDate/mod.ts";
import type { NewPageHookResult, NewPageHookOptions } from "../custom-new-page-3/mod.ts";
import { parse, toString, isTask } from "../takker99%2Ftakker-scheduler/deps.ts";
import type { Interval } from "../takker99%2Ftakker-scheduler/deps.ts";
import { getIndentCount } from "../scrapbox-userscript-std/text.ts";
import { lightFormat } from "../date-fns/mod.ts";
import { parse } from "../takker99%2Ftakker-scheduler/workflow.ts";

const foodType = {
  "あさごはん": "#log-breakfast",
  "ひるごはん": "#log-lunch",
  "よるごはん": "#log-dinner",
} as Record<string, `#${string}`>;

/** task lineの配下に書いたものを新しいページに切り出す
 *
 * 食べたもの記録のときは若干Templateを変える
 */
export const taskLineHook = (
  text: string,
  { title, projectTo, mode }: NewPageHookOptions,
): NewPageHookResult | undefined => {
  const [taskLine, ...lines] = text.split("\n");
  // 箇条書きが無い時は何もしない
  if (lines.length === 0) return;
  const parsed = parse(taskLine);
  if (!parsed) return;
  
  const { title: taskName, base, record, ...rest } = parsed;
  const newTitle = makeTaskTitle(taskName, base, record);
  const newTaskLine = toString({
    title: `[${newTitle}]`,
    base,
    record,
    ...rest,
  });
  // 余計なインデントを削る
  const minIndentNum = Math.min(...lines.map((line) => getIndentCount(line)));
  const newLines = [
    // タスク名にリンクが入っていたときはそれを使う
    ...(/[\[\]]/.test(taskName) ? [taskName] : []), 
    ...lines.map(
      (line) => line.slice(minIndentNum)
    ),
    "",
    `from [${title}]`,
    ...((title in foodType) ? [foodType[title], '#log-eatenfood'] : []),
    lightFormat(record.start ?? base, '#yyyy-MM-dd HH:mm:ss'),
  ];
  
  return {
    text: newTaskLine,
    pages: [{
      project: projectTo,
      title: newTitle,
      lines: newLines,
      mode,
    }],
  };
};

const makeTaskTitle = (title: string, base: Date, record: Interval) => {
  const date = lightFormat(record.start ?? base, 'yyyy-MM-dd');
  if (title in foodType) {
    return `${date} ${title}`;
  }
  // タスクリンクの場合は、それをそのまま使う
  if (parse(title.slice(1, -1))) {
    return title.slice(1, -1);
  }
  return `${title.replace(/[\[\]]/g, '').trim()} ${date}`;
};

export const newPageHook = (
  text: string,
  { title: titleFrom, projectTo, mode, lines: metaLines }: NewPageHookOptions,
): NewPageHookResult => {
  const [rawTitle, ...lines] = text.split("\n");
  const title = rawTitle.replace(/[\[\]]/g, "").trim();
  // 余計なインデントを削る
  const minIndentNum = Math.min(...lines.map((line) => getIndentCount(line)));
  
  // 行の更新日時と現在日時から日付タグを作る
  // "takker"で始まるproject以外ではoffにする
  const dates = projectTo.startsWith("takker") ? getEachLatestDate([
    new Date(),
    ...metaLines.map(({ updated }) => new Date(updated * 1000)),
  ])
  .sort((a, b) => b.getTime() - a.getTime())
  .map(
    (date) => lightFormat(date, '#yyyy-MM-dd HH:mm:ss')
  ) : [];
  
  const newLines = [
    `from [${titleFrom}]`,
    "",
    // タイトルにリンクが入っていたときはそれを使う
    ...(/[\[\]]/.test(rawTitle) ? [rawTitle.trimStart()] : []), 
    ...lines.map((line) => line.slice(minIndentNum)),
    "",
    ...dates,
  ];
  
  return {
    text: `${" ".repeat(getIndentCount(rawTitle))}[${title}]`,
    pages: [{
      project: projectTo,
      title,
      lines: newLines,
      mode,
    }],
  };
};