const { secure, toast } = require("./api");
const { localDate } = require("./date");

function apply(page, ids) {
  const tasks = page.data.tasks.map((task) =>
    ids.includes(task.id) ? { ...task, completed: true } : task,
  );
  page.setData({
    tasks,
    done: tasks.filter((t) => t.completed).length,
    undoneCount: tasks.filter((t) => !t.completed).length,
  });
  if (wx.vibrateShort) wx.vibrateShort({ type: "light", fail() {} });
}

async function complete(page, task) {
  if (
    !task ||
    task.completed ||
    page.data.completingAll ||
    page.data.taskBusyIds.length
  )
    return;
  const date = page.data.date || localDate();
  page.setData({ taskBusyIds: [task.id] });
  try {
    await secure("/tasks/" + task.id + "/completion", "PUT", {
      date,
      completed: true,
    });
    if (page.data.date && page.data.date !== date) return;
    apply(page, [task.id]);
    wx.showToast({ title: "照顾好了，记下一份陪伴", icon: "success" });
  } catch (error) {
    toast(error);
  } finally {
    page.setData({ taskBusyIds: [] });
  }
}

async function completeAll(page) {
  if (page.data.completingAll || page.data.taskBusyIds.length) return;
  const tasks = page.data.tasks.filter((t) => !t.completed);
  if (!tasks.length) return;
  const date = page.data.date || localDate();
  page.setData({ completingAll: true });
  try {
    const confirmation = await wx.showModal({
      title: "都照顾好了吗？",
      content: `将 ${date} 的 ${tasks.length} 项待办记为完成，完成后不能撤销。`,
      confirmText: "全部完成",
      confirmColor: "#b95738",
    });
    if (!confirmation.confirm) return;
    // The API accepts bounded batches; avoid partial completion of larger lists.
    if (tasks.length > 200) throw new Error("任务较多，请分项完成后再试");
    await secure("/tasks/completions", "PUT", {
      date,
      task_ids: tasks.map((t) => t.id),
    });
    if (page.data.date && page.data.date !== date) return;
    apply(
      page,
      tasks.map((t) => t.id),
    );
    wx.showToast({ title: "日常照顾全部完成", icon: "success" });
  } catch (error) {
    toast(error);
  } finally {
    page.setData({ completingAll: false });
  }
}
module.exports = { complete, completeAll };