/** 
based on framer-motion@4.1.15,
Copyright (c) 2018 Framer B.V.
*/
import {fixed} from '../../utils/fix-process-env';
import { __rest, __spreadArray, __read } from 'tslib';
import { inertia, animate } from 'popmotion';
import { secondsToMilliseconds } from '../../utils/time-conversion.js';
import { isEasingArray, easingDefinitionToFunction } from './easing.js';
import { isAnimatable } from './is-animatable.js';
import { getDefaultTransition } from './default-transitions.js';
import { warning } from 'hey-listen';
import { getAnimatableNone } from '../../render/dom/value-types/animatable-none.js';

/**
 * Decide whether a transition is defined on a given Transition.
 * This filters out orchestration options and returns true
 * if any options are left.
 */
function isTransitionDefined(_a) {
    _a.when; _a.delay; _a.delayChildren; _a.staggerChildren; _a.staggerDirection; _a.repeat; _a.repeatType; _a.repeatDelay; _a.from; var transition = __rest(_a, ["when", "delay", "delayChildren", "staggerChildren", "staggerDirection", "repeat", "repeatType", "repeatDelay", "from"]);
    return !!Object.keys(transition).length;
}
var legacyRepeatWarning = false;
/**
 * Convert Framer Motion's Transition type into Popmotion-compatible options.
 */
function convertTransitionToAnimationOptions(_a) {
    var ease = _a.ease, times = _a.times, yoyo = _a.yoyo, flip = _a.flip, loop = _a.loop, transition = __rest(_a, ["ease", "times", "yoyo", "flip", "loop"]);
    var options = Object.assign({}, transition);
    if (times)
        options["offset"] = times;
    /**
     * Convert any existing durations from seconds to milliseconds
     */
    if (transition.duration)
        options["duration"] = secondsToMilliseconds(transition.duration);
    if (transition.repeatDelay)
        options.repeatDelay = secondsToMilliseconds(transition.repeatDelay);
    /**
     * Map easing names to Popmotion's easing functions
     */
    if (ease) {
        options["ease"] = isEasingArray(ease)
            ? ease.map(easingDefinitionToFunction)
            : easingDefinitionToFunction(ease);
    }
    /**
     * Support legacy transition API
     */
    if (transition.type === "tween")
        options.type = "keyframes";
    /**
     * TODO: These options are officially removed from the API.
     */
    if (yoyo || loop || flip) {
        warning(!legacyRepeatWarning, "yoyo, loop and flip have been removed from the API. Replace with repeat and repeatType options.");
        legacyRepeatWarning = true;
        if (yoyo) {
            options.repeatType = "reverse";
        }
        else if (loop) {
            options.repeatType = "loop";
        }
        else if (flip) {
            options.repeatType = "mirror";
        }
        options.repeat = loop || yoyo || flip || transition.repeat;
    }
    /**
     * TODO: Popmotion 9 has the ability to automatically detect whether to use
     * a keyframes or spring animation, but does so by detecting velocity and other spring options.
     * It'd be good to introduce a similar thing here.
     */
    if (transition.type !== "spring")
        options.type = "keyframes";
    return options;
}
/**
 * Get the delay for a value by checking Transition with decreasing specificity.
 */
function getDelayFromTransition(transition, key) {
    var _a;
    var valueTransition = getValueTransition(transition, key) || {};
    return (_a = valueTransition.delay) !== null && _a !== void 0 ? _a : 0;
}
function hydrateKeyframes(options) {
    if (Array.isArray(options.to) && options.to[0] === null) {
        options.to = __spreadArray([], __read(options.to));
        options.to[0] = options.from;
    }
    return options;
}
function getPopmotionAnimationOptions(transition, options, key) {
    var _a;
    if (Array.isArray(options.to)) {
        (_a = transition.duration) !== null && _a !== void 0 ? _a : (transition.duration = 0.8);
    }
    hydrateKeyframes(options);
    /**
     * Get a default transition if none is determined to be defined.
     */
    if (!isTransitionDefined(transition)) {
        transition = Object.assign(Object.assign({}, transition), getDefaultTransition(key, options.to));
    }
    return Object.assign(Object.assign({}, options), convertTransitionToAnimationOptions(transition));
}
/**
 *
 */
function getAnimation(key, value, target, transition, onComplete) {
    var _a;
    var valueTransition = getValueTransition(transition, key);
    var origin = (_a = valueTransition.from) !== null && _a !== void 0 ? _a : value.get();
    var isTargetAnimatable = isAnimatable(key, target);
    if (origin === "none" && isTargetAnimatable && typeof target === "string") {
        /**
         * If we're trying to animate from "none", try and get an animatable version
         * of the target. This could be improved to work both ways.
         */
        origin = getAnimatableNone(key, target);
    }
    else if (isZero(origin) && typeof target === "string") {
        origin = getZeroUnit(target);
    }
    else if (!Array.isArray(target) &&
        isZero(target) &&
        typeof origin === "string") {
        target = getZeroUnit(origin);
    }
    var isOriginAnimatable = isAnimatable(key, origin);
    warning(isOriginAnimatable === isTargetAnimatable, "You are trying to animate " + key + " from \"" + origin + "\" to \"" + target + "\". " + origin + " is not an animatable value - to enable this animation set " + origin + " to a value animatable to " + target + " via the `style` property.");
    function start() {
        var options = {
            from: origin,
            to: target,
            velocity: value.getVelocity(),
            onComplete: onComplete,
            onUpdate: function (v) { return value.set(v); },
        };
        return valueTransition.type === "inertia" ||
            valueTransition.type === "decay"
            ? inertia(Object.assign(Object.assign({}, options), valueTransition))
            : animate(Object.assign(Object.assign({}, getPopmotionAnimationOptions(valueTransition, options, key)), { onUpdate: function (v) {
                    var _a;
                    options.onUpdate(v);
                    (_a = valueTransition.onUpdate) === null || _a === void 0 ? void 0 : _a.call(valueTransition, v);
                }, onComplete: function () {
                    var _a;
                    options.onComplete();
                    (_a = valueTransition.onComplete) === null || _a === void 0 ? void 0 : _a.call(valueTransition);
                } }));
    }
    function set() {
        var _a;
        value.set(target);
        onComplete();
        (_a = valueTransition === null || valueTransition === void 0 ? void 0 : valueTransition.onComplete) === null || _a === void 0 ? void 0 : _a.call(valueTransition);
        return { stop: function () { } };
    }
    return !isOriginAnimatable ||
        !isTargetAnimatable ||
        valueTransition.type === false
        ? set
        : start;
}
function isZero(value) {
    return (value === 0 ||
        (typeof value === "string" &&
            parseFloat(value) === 0 &&
            value.indexOf(" ") === -1));
}
function getZeroUnit(potentialUnitType) {
    return typeof potentialUnitType === "number"
        ? 0
        : getAnimatableNone("", potentialUnitType);
}
function getValueTransition(transition, key) {
    return transition[key] || transition["default"] || transition;
}
/**
 * Start animation on a MotionValue. This function is an interface between
 * Framer Motion and Popmotion
 *
 * @internal
 */
function startAnimation(key, value, target, transition) {
    if (transition === void 0) { transition = {}; }
    return value.start(function (onComplete) {
        var delayTimer;
        var controls;
        var animation = getAnimation(key, value, target, transition, onComplete);
        var delay = getDelayFromTransition(transition, key);
        var start = function () { return (controls = animation()); };
        if (delay) {
            delayTimer = setTimeout(start, secondsToMilliseconds(delay));
        }
        else {
            start();
        }
        return function () {
            clearTimeout(delayTimer);
            controls === null || controls === void 0 ? void 0 : controls.stop();
        };
    });
}

export { convertTransitionToAnimationOptions, getDelayFromTransition, getPopmotionAnimationOptions, getValueTransition, getZeroUnit, hydrateKeyframes, isTransitionDefined, isZero, startAnimation };
