"use client";

import type { DailyAdventureItemData, DailyTodoData, DayMode } from "@adventureos/shared";
import { DAY_MODES } from "@adventureos/shared";
import { useState } from "react";
import Link from "next/link";
import { useAdventureMutations } from "@/hooks/useAdventureMutations";
import { AdventureItemRow } from "@/components/features/adventure-item-row";
import { ChecklistItem } from "@/components/features/checklist-item";

interface TodaysAdventureProps {
  date: string;
  chapter: string;
  journeyDay: number;
  isRestDay: boolean;
  isCustomized: boolean;
  workHoursTarget: number | null;
  dayMode: DayMode;
  isBackfilled: boolean;
  items: DailyAdventureItemData[];
  todos: DailyTodoData[];
}

export function TodaysAdventure({
  date,
  chapter,
  journeyDay,
  isRestDay,
  isCustomized,
  workHoursTarget,
  dayMode,
  isBackfilled,
  items,
  todos,
}: TodaysAdventureProps) {
  const [customize, setCustomize] = useState(false);
  const [newTodo, setNewTodo] = useState("");
  const [newItemLabel, setNewItemLabel] = useState("");
  const [workTarget, setWorkTarget] = useState(
    workHoursTarget ?? items.find((i) => i.type === "duration")?.config?.targetHours ?? 7.5
  );

  const { updateItem, addItem, removeItem, todoMut, restDay, updateWorkHours, updateDayMode } =
    useAdventureMutations(date, items);

  const checklists = items.filter((i) => i.type === "checklist");
  const main = items.filter((i) => i.type !== "checklist");

  return (
    <div className="retro-window">
      <div className="retro-titlebar">
        <span>Today&apos;s Adventure</span>
        <span className="text-xs font-normal opacity-90">
          {chapter} · Day {journeyDay}
          {isBackfilled && " · Logged later"}
        </span>
      </div>
      <div className="p-4">
        <div className="flex flex-wrap gap-2 mb-3 items-center">
          <select
            className="retro-window-inset text-xs p-1"
            value={dayMode}
            onChange={(e) => updateDayMode.mutate(e.target.value)}
          >
            {Object.entries(DAY_MODES).map(([key, label]) => (
              <option key={key} value={key}>
                {label}
              </option>
            ))}
          </select>
          {dayMode === "low_energy" && (
            <span className="text-xs italic text-[var(--xp-blue)]">Low-energy day — lighter expectations</span>
          )}
          <button
            className={`retro-btn text-xs ${customize ? "retro-btn-primary" : ""}`}
            onClick={() => setCustomize(!customize)}
          >
            {customize ? "Done customizing" : "Customize Today"}
          </button>
          {customize && (
            <Link href="/settings?section=templates" className="text-xs underline text-[var(--warm-grey)]">
              Edit weekday template →
            </Link>
          )}
        </div>

        {customize && (
          <p className="text-xs italic mb-3 text-[var(--xp-blue)]">
            Editing today only — templates unchanged
            {isCustomized && " · This day has custom overrides"}
          </p>
        )}

        {isRestDay && (
          <p className="text-sm italic mb-3 text-[var(--xp-blue)]">
            Rest day — your adventure pauses gently today.
          </p>
        )}

        <div className="space-y-2">
          {main.map((item) => (
            <AdventureItemRow
              key={item.id}
              item={item}
              disabled={isRestDay}
              customize={customize}
              workTarget={workHoursTarget ?? (item.config?.targetHours as number) ?? 7.5}
              onUpdate={(value, state) => updateItem.mutate({ id: item.id, value, state })}
              onMetaUpdate={(updates) => updateItem.mutate({ id: item.id, ...updates })}
              onRemove={() => removeItem.mutate(item.id)}
            />
          ))}
        </div>

        {customize && (
          <div className="mt-3 flex gap-2 items-center">
            <input
              className="retro-window-inset flex-1 p-1 text-sm"
              placeholder="Add custom item..."
              value={newItemLabel}
              onChange={(e) => setNewItemLabel(e.target.value)}
            />
            <button
              className="retro-btn text-xs"
              disabled={!newItemLabel.trim()}
              onClick={() => {
                addItem.mutate(newItemLabel.trim(), {
                  onSuccess: () => setNewItemLabel(""),
                });
              }}
            >
              Add
            </button>
          </div>
        )}

        {customize && items.some((i) => i.type === "duration" && i.label === "Work") && (
          <div className="mt-3 flex gap-2 items-center">
            <span className="text-sm">Work target (hours):</span>
            <input
              type="number"
              step="0.5"
              className="retro-window-inset w-20 p-1 text-sm"
              value={workTarget}
              onChange={(e) => setWorkTarget(Number(e.target.value))}
            />
            <button
              className="retro-btn text-xs"
              onClick={() => updateWorkHours.mutate(workTarget)}
            >
              Save
            </button>
          </div>
        )}

        {checklists.length > 0 && (
          <>
            <hr className="my-4 border-[var(--warm-grey)] opacity-30" />
            <p className="text-xs font-bold mb-2 text-[var(--warm-grey)]">Checklists</p>
            <div className="flex flex-wrap gap-4">
              {checklists.map((item) => (
                <ChecklistItem
                  key={item.id}
                  label={item.label}
                  checks={(item.value?.checks as boolean[]) ?? []}
                  disabled={isRestDay}
                  onToggle={(checks) => updateItem.mutate({ id: item.id, value: { checks } })}
                />
              ))}
            </div>
          </>
        )}

        <hr className="my-4 border-[var(--warm-grey)] opacity-30" />
        <p className="text-xs font-bold mb-2 text-[var(--warm-grey)]">Today&apos;s Todos</p>
        <div className="space-y-1">
          {todos.map((todo) => (
            <label key={todo.id} className="flex items-center gap-2 py-0.5 cursor-pointer">
              <input
                type="checkbox"
                checked={todo.done}
                disabled={isRestDay}
                onChange={() =>
                  todoMut.mutate({ action: "update", id: todo.id, done: !todo.done })
                }
                className="w-4 h-4"
              />
              <span className={todo.done ? "line-through opacity-70 text-sm" : "text-sm"}>
                {todo.label}
              </span>
              {customize && (
                <button
                  className="text-xs text-[var(--muted-rose)] ml-auto"
                  onClick={() => todoMut.mutate({ action: "delete", id: todo.id })}
                >
                  ✕
                </button>
              )}
            </label>
          ))}
        </div>
        {!isRestDay && (
          <div className="mt-2 flex gap-2">
            <input
              className="retro-window-inset flex-1 p-1 text-sm"
              placeholder="Add a todo for today..."
              value={newTodo}
              onChange={(e) => setNewTodo(e.target.value)}
              onKeyDown={(e) => {
                if (e.key === "Enter" && newTodo.trim()) {
                  todoMut.mutate(
                    { action: "create", label: newTodo.trim() },
                    { onSuccess: () => setNewTodo("") }
                  );
                }
              }}
            />
            <button
              className="retro-btn text-xs"
              disabled={!newTodo.trim()}
              onClick={() =>
                todoMut.mutate(
                  { action: "create", label: newTodo.trim() },
                  { onSuccess: () => setNewTodo("") }
                )
              }
            >
              Add
            </button>
          </div>
        )}

        <div className="mt-4 flex gap-2">
          <button
            className="retro-btn text-xs"
            onClick={() => restDay.mutate()}
            disabled={isRestDay}
          >
            Mark Rest Day
          </button>
        </div>
      </div>
    </div>
  );
}