import type { KeyboardEvent as ReactKeyboardEvent } from "react";

import {
  HOURS_PER_DAY,
  formatTimeOfDayHours
} from "../document/project-time-settings";
import { formatControlEffectValue, getControlTargetRefKey } from "../controls/control-surface";
import {
  PROJECT_SCHEDULE_WEEKDAYS,
  formatProjectScheduleDaySelection,
  formatProjectScheduleWeekdayLabel,
  getProjectScheduleTimelineSegments,
  type ProjectScheduler,
  type ProjectScheduleRoutine,
  type ProjectScheduleWeekday
} from "../scheduler/project-scheduler";
import {
  getProjectScheduleEffectOptionId,
  getProjectScheduleTargetOptionForRoutine,
  listProjectScheduleEffectOptions,
  type ProjectScheduleEffectOptionId,
  type ProjectScheduleTargetOption
} from "../scheduler/project-schedule-control-options";

interface ProjectSchedulePaneProps {
  targetOptions: ProjectScheduleTargetOption[];
  scheduler: ProjectScheduler;
  selectedRoutineId: string | null;
  onSelectRoutine(routineId: string | null): void;
  onAddRoutine(targetKey: string): void;
  onDeleteRoutine(routineId: string): void;
  onClose(): void;
  onSetRoutineTarget(routineId: string, targetKey: string): void;
  onSetRoutineTitle(routineId: string, title: string): void;
  onSetRoutineEnabled(routineId: string, enabled: boolean): void;
  onSetRoutineStartHour(routineId: string, startHour: number): void;
  onSetRoutineEndHour(routineId: string, endHour: number): void;
  onSetRoutinePriority(routineId: string, priority: number): void;
  onSetRoutineEffectOption(
    routineId: string,
    effectOptionId: ProjectScheduleEffectOptionId
  ): void;
  onSetRoutineDays(
    routineId: string,
    mode: "everyDay" | "selectedDays",
    days: ProjectScheduleWeekday[]
  ): void;
  onSetRoutineNumericValue(routineId: string, value: number): void;
  onSetRoutineColorValue(routineId: string, colorHex: string): void;
  onSetRoutineAnimationClip(routineId: string, clipName: string): void;
  onSetRoutineAnimationLoop(routineId: string, loop: boolean): void;
}

function handleCommitOnEnter(
  event: ReactKeyboardEvent<HTMLInputElement>,
  commit: () => void
) {
  if (event.key !== "Enter") {
    return;
  }

  event.currentTarget.blur();
  commit();
}

function getRoutineSummary(routine: ProjectScheduleRoutine): string {
  return `${formatProjectScheduleDaySelection(routine.days)} · ${formatTimeOfDayHours(routine.startHour)}-${formatTimeOfDayHours(routine.endHour)} · ${formatControlEffectValue(routine.effect)} · P${routine.priority}`;
}

function isRoutineEffectInactive(routine: ProjectScheduleRoutine): boolean {
  switch (routine.effect.type) {
    case "setActorPresence":
      return !routine.effect.active;
    case "stopModelAnimation":
    case "stopSound":
      return true;
    case "setModelInstanceVisible":
      return !routine.effect.visible;
    case "setInteractionEnabled":
    case "setLightEnabled":
      return !routine.effect.enabled;
    default:
      return false;
  }
}

function getRoutineNumericValue(routine: ProjectScheduleRoutine): number | null {
  switch (routine.effect.type) {
    case "setSoundVolume":
      return routine.effect.volume;
    case "setLightIntensity":
    case "setAmbientLightIntensity":
    case "setSunLightIntensity":
      return routine.effect.intensity;
    default:
      return null;
  }
}

function getRoutineColorValue(routine: ProjectScheduleRoutine): string | null {
  switch (routine.effect.type) {
    case "setLightColor":
    case "setAmbientLightColor":
    case "setSunLightColor":
      return routine.effect.colorHex;
    default:
      return null;
  }
}

function groupTargetOptions(
  targetOptions: ProjectScheduleTargetOption[]
): Array<{ groupLabel: string; options: ProjectScheduleTargetOption[] }> {
  const grouped = new Map<string, ProjectScheduleTargetOption[]>();

  for (const option of targetOptions) {
    const entries = grouped.get(option.groupLabel) ?? [];
    entries.push(option);
    grouped.set(option.groupLabel, entries);
  }

  return [...grouped.entries()].map(([groupLabel, options]) => ({
    groupLabel,
    options
  }));
}

export function ProjectSchedulePane({
  targetOptions,
  scheduler,
  selectedRoutineId,
  onSelectRoutine,
  onAddRoutine,
  onDeleteRoutine,
  onClose,
  onSetRoutineTarget,
  onSetRoutineTitle,
  onSetRoutineEnabled,
  onSetRoutineStartHour,
  onSetRoutineEndHour,
  onSetRoutinePriority,
  onSetRoutineEffectOption,
  onSetRoutineDays,
  onSetRoutineNumericValue,
  onSetRoutineColorValue,
  onSetRoutineAnimationClip,
  onSetRoutineAnimationLoop
}: ProjectSchedulePaneProps) {
  const selectedRoutine =
    selectedRoutineId === null ? null : scheduler.routines[selectedRoutineId] ?? null;
  const selectedTargetOption =
    selectedRoutine === null
      ? null
      : getProjectScheduleTargetOptionForRoutine(
          targetOptions,
          selectedRoutine.target
        );
  const selectedEffectOptionId =
    selectedRoutine === null
      ? null
      : getProjectScheduleEffectOptionId(selectedRoutine.effect);
  const selectedEffectOptions =
    selectedTargetOption === null
      ? []
      : listProjectScheduleEffectOptions(selectedTargetOption);
  const selectedRoutineDays =
    selectedRoutine === null
      ? PROJECT_SCHEDULE_WEEKDAYS
      : selectedRoutine.days.mode === "everyDay"
        ? PROJECT_SCHEDULE_WEEKDAYS
        : selectedRoutine.days.days;
  const hourTicks = Array.from({ length: HOURS_PER_DAY }, (_, hour) => hour);

  return (
    <section className="schedule-pane" data-testid="project-schedule-pane">
      <div className="schedule-pane__header">
        <div>
          <div className="label">Schedule</div>
          <div className="schedule-pane__summary">
            Scheduler-owned orchestration over typed control targets and global
            project time.
          </div>
        </div>
        <div className="schedule-pane__actions">
          <button
            className="toolbar__button toolbar__button--compact"
            type="button"
            disabled={targetOptions.length === 0}
            onClick={() =>
              onAddRoutine(
                selectedTargetOption?.key ?? targetOptions[0]?.key ?? ""
              )
            }
          >
            Add Routine
          </button>
          <button
            className="toolbar__button toolbar__button--compact"
            type="button"
            onClick={onClose}
          >
            Close
          </button>
        </div>
      </div>

      <div className="schedule-pane__body">
        <div className="schedule-pane__timeline">
          <div className="schedule-ruler">
            <div className="schedule-ruler__label">Targets</div>
            <div className="schedule-ruler__track">
              {hourTicks.map((hour) => (
                <div key={hour} className="schedule-ruler__tick">
                  <span>{String(hour).padStart(2, "0")}</span>
                </div>
              ))}
            </div>
          </div>

          {targetOptions.length === 0 ? (
            <div className="schedule-pane__empty">
              No scheduler-addressable control targets are authored in this
              project yet.
            </div>
          ) : (
            targetOptions.map((targetOption) => {
              const routines = Object.values(scheduler.routines)
                .filter(
                  (routine) =>
                    getControlTargetRefKey(routine.target) === targetOption.key
                )
                .sort((left, right) => left.startHour - right.startHour);

              return (
                <div key={targetOption.key} className="schedule-row">
                  <div className="schedule-row__label">
                    <button
                      className="schedule-row__add"
                      type="button"
                      onClick={() => onAddRoutine(targetOption.key)}
                    >
                      +
                    </button>
                    <div className="schedule-row__meta">
                      <div className="schedule-row__title">{targetOption.label}</div>
                      <div className="schedule-row__subtitle">
                        {targetOption.groupLabel} · {targetOption.subtitle}
                      </div>
                    </div>
                  </div>
                  <div className="schedule-row__track">
                    <div className="schedule-row__grid" />
                    {routines.map((routine) =>
                      getProjectScheduleTimelineSegments(routine).map(
                        (segment) => (
                          <button
                            key={segment.key}
                            className={`schedule-block ${
                              selectedRoutineId === routine.id
                                ? "schedule-block--selected"
                                : ""
                            } ${
                              isRoutineEffectInactive(routine)
                                ? "schedule-block--inactive"
                                : ""
                            } ${
                              routine.enabled ? "" : "schedule-block--disabled"
                            }`.trim()}
                            type="button"
                            title={`${routine.title} · ${getRoutineSummary(routine)}`}
                            style={{
                              left: `${(segment.startHour / HOURS_PER_DAY) * 100}%`,
                              width: `${((segment.endHour - segment.startHour) / HOURS_PER_DAY) * 100}%`
                            }}
                            onClick={() => onSelectRoutine(routine.id)}
                          >
                            <span className="schedule-block__title">
                              {routine.title}
                            </span>
                          </button>
                        )
                      )
                    )}
                  </div>
                </div>
              );
            })
          )}
        </div>

        <aside className="schedule-pane__editor">
          {selectedRoutine === null || selectedTargetOption === null ? (
            <div className="schedule-pane__empty">
              Select a routine block or create a new schedule routine.
            </div>
          ) : (
            <>
              <div className="form-section">
                <div className="label">Routine</div>
                <label className="form-field">
                  <span className="label">Title</span>
                  <input
                    key={`${selectedRoutine.id}-title`}
                    className="text-input"
                    type="text"
                    defaultValue={selectedRoutine.title}
                    onBlur={(event) =>
                      onSetRoutineTitle(
                        selectedRoutine.id,
                        event.currentTarget.value
                      )
                    }
                    onKeyDown={(event) =>
                      handleCommitOnEnter(event, () =>
                        onSetRoutineTitle(
                          selectedRoutine.id,
                          event.currentTarget.value
                        )
                      )
                    }
                  />
                </label>
                <label className="form-field">
                  <span className="label">Target</span>
                  <select
                    className="select-input"
                    value={selectedTargetOption.key}
                    onChange={(event) =>
                      onSetRoutineTarget(selectedRoutine.id, event.currentTarget.value)
                    }
                  >
                    {groupTargetOptions(targetOptions).map((group) => (
                      <optgroup key={group.groupLabel} label={group.groupLabel}>
                        {group.options.map((option) => (
                          <option key={option.key} value={option.key}>
                            {option.label} ({option.subtitle})
                          </option>
                        ))}
                      </optgroup>
                    ))}
                  </select>
                </label>
                <label className="form-field">
                  <span className="label">Effect</span>
                  <select
                    className="select-input"
                    value={selectedEffectOptionId ?? ""}
                    onChange={(event) =>
                      onSetRoutineEffectOption(
                        selectedRoutine.id,
                        event.currentTarget.value as ProjectScheduleEffectOptionId
                      )
                    }
                  >
                    {selectedEffectOptions.map((effectOption) => (
                      <option key={effectOption.id} value={effectOption.id}>
                        {effectOption.label}
                      </option>
                    ))}
                  </select>
                </label>
                <label className="form-field form-field--inline">
                  <input
                    type="checkbox"
                    checked={selectedRoutine.enabled}
                    onChange={(event) =>
                      onSetRoutineEnabled(
                        selectedRoutine.id,
                        event.currentTarget.checked
                      )
                    }
                  />
                  <span className="label">Enabled</span>
                </label>
              </div>

              <div className="form-section">
                <div className="label">Days</div>
                <div className="schedule-days">
                  <button
                    className={`schedule-day ${
                      selectedRoutine.days.mode === "everyDay"
                        ? "schedule-day--active"
                        : ""
                    }`.trim()}
                    type="button"
                    onClick={() =>
                      onSetRoutineDays(selectedRoutine.id, "everyDay", [])
                    }
                  >
                    Every
                  </button>
                  {PROJECT_SCHEDULE_WEEKDAYS.map((weekday) => {
                    const selected = selectedRoutineDays.includes(weekday);
                    const nextDays =
                      selectedRoutine.days.mode === "everyDay"
                        ? PROJECT_SCHEDULE_WEEKDAYS.filter(
                            (entry) => entry !== weekday
                          )
                        : selected
                          ? selectedRoutineDays.filter(
                              (entry) => entry !== weekday
                            )
                          : [...selectedRoutineDays, weekday];

                    return (
                      <button
                        key={weekday}
                        className={`schedule-day ${
                          selected ? "schedule-day--active" : ""
                        }`.trim()}
                        type="button"
                        onClick={() =>
                          onSetRoutineDays(
                            selectedRoutine.id,
                            nextDays.length === PROJECT_SCHEDULE_WEEKDAYS.length
                              ? "everyDay"
                              : "selectedDays",
                            nextDays.length === 0 ? [weekday] : nextDays
                          )
                        }
                      >
                        {formatProjectScheduleWeekdayLabel(weekday)}
                      </button>
                    );
                  })}
                </div>
              </div>

              <div className="form-section">
                <div className="label">Window</div>
                <div className="vector-inputs vector-inputs--two">
                  <label className="form-field">
                    <span className="label">Start</span>
                    <input
                      key={`${selectedRoutine.id}-start`}
                      className="text-input"
                      type="number"
                      min="0"
                      max="24"
                      step="0.25"
                      defaultValue={selectedRoutine.startHour}
                      onBlur={(event) =>
                        onSetRoutineStartHour(
                          selectedRoutine.id,
                          Number(event.currentTarget.value)
                        )
                      }
                      onKeyDown={(event) =>
                        handleCommitOnEnter(event, () =>
                          onSetRoutineStartHour(
                            selectedRoutine.id,
                            Number(event.currentTarget.value)
                          )
                        )
                      }
                    />
                  </label>
                  <label className="form-field">
                    <span className="label">End</span>
                    <input
                      key={`${selectedRoutine.id}-end`}
                      className="text-input"
                      type="number"
                      min="0"
                      max="24"
                      step="0.25"
                      defaultValue={selectedRoutine.endHour}
                      onBlur={(event) =>
                        onSetRoutineEndHour(
                          selectedRoutine.id,
                          Number(event.currentTarget.value)
                        )
                      }
                      onKeyDown={(event) =>
                        handleCommitOnEnter(event, () =>
                          onSetRoutineEndHour(
                            selectedRoutine.id,
                            Number(event.currentTarget.value)
                          )
                        )
                      }
                    />
                  </label>
                </div>
                <label className="form-field">
                  <span className="label">Priority</span>
                  <input
                    key={`${selectedRoutine.id}-priority`}
                    className="text-input"
                    type="number"
                    step="1"
                    defaultValue={selectedRoutine.priority}
                    onBlur={(event) =>
                      onSetRoutinePriority(
                        selectedRoutine.id,
                        Number(event.currentTarget.value)
                      )
                    }
                    onKeyDown={(event) =>
                      handleCommitOnEnter(event, () =>
                        onSetRoutinePriority(
                          selectedRoutine.id,
                          Number(event.currentTarget.value)
                        )
                      )
                    }
                  />
                </label>
              </div>

              {selectedEffectOptions.find(
                (effectOption) => effectOption.id === selectedEffectOptionId
              )?.valueKind === "number" ? (
                <div className="form-section">
                  <div className="label">Value</div>
                  <label className="form-field">
                    <span className="label">
                      {selectedEffectOptions.find(
                        (effectOption) => effectOption.id === selectedEffectOptionId
                      )?.valueLabel ?? "Value"}
                    </span>
                    <input
                      key={`${selectedRoutine.id}-numeric`}
                      className="text-input"
                      type="number"
                      min={
                        selectedEffectOptions.find(
                          (effectOption) =>
                            effectOption.id === selectedEffectOptionId
                        )?.min ?? 0
                      }
                      step={
                        selectedEffectOptions.find(
                          (effectOption) =>
                            effectOption.id === selectedEffectOptionId
                        )?.step ?? 0.1
                      }
                      defaultValue={getRoutineNumericValue(selectedRoutine) ?? 0}
                      onBlur={(event) =>
                        onSetRoutineNumericValue(
                          selectedRoutine.id,
                          Number(event.currentTarget.value)
                        )
                      }
                      onKeyDown={(event) =>
                        handleCommitOnEnter(event, () =>
                          onSetRoutineNumericValue(
                            selectedRoutine.id,
                            Number(event.currentTarget.value)
                          )
                        )
                      }
                    />
                  </label>
                </div>
              ) : null}

              {selectedEffectOptions.find(
                (effectOption) => effectOption.id === selectedEffectOptionId
              )?.valueKind === "color" ? (
                <div className="form-section">
                  <div className="label">Value</div>
                  <label className="form-field">
                    <span className="label">
                      {selectedEffectOptions.find(
                        (effectOption) => effectOption.id === selectedEffectOptionId
                      )?.valueLabel ?? "Color"}
                    </span>
                    <input
                      className="color-input"
                      type="color"
                      value={getRoutineColorValue(selectedRoutine) ?? "#ffffff"}
                      onChange={(event) =>
                        onSetRoutineColorValue(
                          selectedRoutine.id,
                          event.currentTarget.value
                        )
                      }
                    />
                  </label>
                </div>
              ) : null}

              {selectedEffectOptions.find(
                (effectOption) => effectOption.id === selectedEffectOptionId
              )?.valueKind === "animation" ? (
                <div className="form-section">
                  <div className="label">Animation</div>
                  <label className="form-field">
                    <span className="label">Clip</span>
                    <select
                      className="select-input"
                      value={
                        selectedRoutine.effect.type === "playModelAnimation"
                          ? selectedRoutine.effect.clipName
                          : selectedTargetOption.defaults.animationClipNames?.[0] ?? ""
                      }
                      onChange={(event) =>
                        onSetRoutineAnimationClip(
                          selectedRoutine.id,
                          event.currentTarget.value
                        )
                      }
                    >
                      {(selectedTargetOption.defaults.animationClipNames ?? []).map(
                        (clipName) => (
                          <option key={clipName} value={clipName}>
                            {clipName}
                          </option>
                        )
                      )}
                    </select>
                  </label>
                  <label className="form-field form-field--inline">
                    <input
                      type="checkbox"
                      checked={
                        selectedRoutine.effect.type === "playModelAnimation"
                          ? selectedRoutine.effect.loop !== false
                          : true
                      }
                      onChange={(event) =>
                        onSetRoutineAnimationLoop(
                          selectedRoutine.id,
                          event.currentTarget.checked
                        )
                      }
                    />
                    <span className="label">Loop</span>
                  </label>
                </div>
              ) : null}

              <div className="form-section">
                <div className="label">Details</div>
                <div className="schedule-pane__summary">
                  {selectedTargetOption.groupLabel} · {selectedTargetOption.label}
                </div>
                <div className="schedule-pane__summary">
                  {getRoutineSummary(selectedRoutine)}
                </div>
              </div>

              <div className="form-section">
                <button
                  className="toolbar__button toolbar__button--compact"
                  type="button"
                  onClick={() => onDeleteRoutine(selectedRoutine.id)}
                >
                  Delete Routine
                </button>
              </div>
            </>
          )}
        </aside>
      </div>
    </section>
  );
}