import { MotionGlobalConfig, noop } from 'motion-utils';
import { time } from '../frameloop/sync-time.mjs';
import { JSAnimation } from './JSAnimation.mjs';
import { getFinalKeyframe } from './keyframes/get-final.mjs';
import { KeyframeResolver, flushKeyframeResolvers } from './keyframes/KeyframesResolver.mjs';
import { NativeAnimationExtended } from './NativeAnimationExtended.mjs';
import { canAnimate } from './utils/can-animate.mjs';
import { makeAnimationInstant } from './utils/make-animation-instant.mjs';
import { WithPromise } from './utils/WithPromise.mjs';
import { supportsBrowserAnimation } from './waapi/supports/waapi.mjs';

/**
 * Maximum time allowed between an animation being created and it being
 * resolved for us to use the latter as the start time.
 *
 * This is to ensure that while we prefer to "start" an animation as soon
 * as it's triggered, we also want to avoid a visual jump if there's a big delay
 * between these two moments.
 */
const MAX_RESOLVE_DELAY = 40;
class AsyncMotionValueAnimation extends WithPromise {
    constructor({ autoplay = true, delay = 0, type = "keyframes", repeat = 0, repeatDelay = 0, repeatType = "loop", keyframes, name, motionValue, element, ...options }) {
        super();
        /**
         * Bound to support return animation.stop pattern
         */
        this.stop = () => {
            if (this._animation) {
                this._animation.stop();
                this.stopTimeline?.();
            }
            this.keyframeResolver?.cancel();
        };
        this.createdAt = time.now();
        const optionsWithDefaults = {
            autoplay,
            delay,
            type,
            repeat,
            repeatDelay,
            repeatType,
            name,
            motionValue,
            element,
            ...options,
        };
        const KeyframeResolver$1 = element?.KeyframeResolver || KeyframeResolver;
        this.keyframeResolver = new KeyframeResolver$1(keyframes, (resolvedKeyframes, finalKeyframe, forced) => this.onKeyframesResolved(resolvedKeyframes, finalKeyframe, optionsWithDefaults, !forced), name, motionValue, element);
        this.keyframeResolver?.scheduleResolve();
    }
    onKeyframesResolved(keyframes, finalKeyframe, options, sync) {
        this.keyframeResolver = undefined;
        const { name, type, velocity, delay, isHandoff, onUpdate } = options;
        this.resolvedAt = time.now();
        /**
         * If we can't animate this value with the resolved keyframes
         * then we should complete it immediately.
         */
        if (!canAnimate(keyframes, name, type, velocity)) {
            if (MotionGlobalConfig.instantAnimations || !delay) {
                onUpdate?.(getFinalKeyframe(keyframes, options, finalKeyframe));
            }
            keyframes[0] = keyframes[keyframes.length - 1];
            makeAnimationInstant(options);
            options.repeat = 0;
        }
        /**
         * Resolve startTime for the animation.
         *
         * This method uses the createdAt and resolvedAt to calculate the
         * animation startTime. *Ideally*, we would use the createdAt time as t=0
         * as the following frame would then be the first frame of the animation in
         * progress, which would feel snappier.
         *
         * However, if there's a delay (main thread work) between the creation of
         * the animation and the first commited frame, we prefer to use resolvedAt
         * to avoid a sudden jump into the animation.
         */
        const startTime = sync
            ? !this.resolvedAt
                ? this.createdAt
                : this.resolvedAt - this.createdAt > MAX_RESOLVE_DELAY
                    ? this.resolvedAt
                    : this.createdAt
            : undefined;
        const resolvedOptions = {
            startTime,
            finalKeyframe,
            ...options,
            keyframes,
        };
        /**
         * Animate via WAAPI if possible. If this is a handoff animation, the optimised animation will be running via
         * WAAPI. Therefore, this animation must be JS to ensure it runs "under" the
         * optimised animation.
         */
        const animation = !isHandoff && supportsBrowserAnimation(resolvedOptions)
            ? new NativeAnimationExtended({
                ...resolvedOptions,
                element: resolvedOptions.motionValue.owner.current,
            })
            : new JSAnimation(resolvedOptions);
        animation.finished.then(() => this.notifyFinished()).catch(noop);
        if (this.pendingTimeline) {
            this.stopTimeline = animation.attachTimeline(this.pendingTimeline);
            this.pendingTimeline = undefined;
        }
        this._animation = animation;
    }
    get finished() {
        if (!this._animation) {
            return this._finished;
        }
        else {
            return this.animation.finished;
        }
    }
    then(onResolve, _onReject) {
        return this.finished.finally(onResolve).then(() => { });
    }
    get animation() {
        if (!this._animation) {
            this.keyframeResolver?.resume();
            flushKeyframeResolvers();
        }
        return this._animation;
    }
    get duration() {
        return this.animation.duration;
    }
    get iterationDuration() {
        return this.animation.iterationDuration;
    }
    get time() {
        return this.animation.time;
    }
    set time(newTime) {
        this.animation.time = newTime;
    }
    get speed() {
        return this.animation.speed;
    }
    get state() {
        return this.animation.state;
    }
    set speed(newSpeed) {
        this.animation.speed = newSpeed;
    }
    get startTime() {
        return this.animation.startTime;
    }
    attachTimeline(timeline) {
        if (this._animation) {
            this.stopTimeline = this.animation.attachTimeline(timeline);
        }
        else {
            this.pendingTimeline = timeline;
        }
        return () => this.stop();
    }
    play() {
        this.animation.play();
    }
    pause() {
        this.animation.pause();
    }
    complete() {
        this.animation.complete();
    }
    cancel() {
        if (this._animation) {
            this.animation.cancel();
        }
        this.keyframeResolver?.cancel();
    }
}

export { AsyncMotionValueAnimation };