import LoaderPlugin = Phaser.Loader.LoaderPlugin;
import type {CharacterTexture} from "../../Connexion/LocalUser";
import {BodyResourceDescriptionInterface, LAYERS, PLAYER_RESOURCES} from "./PlayerTextures";

export interface FrameConfig {
    frameWidth: number,
    frameHeight: number,
}

export const loadAllLayers = (load: LoaderPlugin): BodyResourceDescriptionInterface[][] => {
    const returnArray:BodyResourceDescriptionInterface[][] = [];
    LAYERS.forEach(layer => {
        const layerArray:BodyResourceDescriptionInterface[] = [];
        Object.values(layer).forEach((textureDescriptor) => {
            layerArray.push(textureDescriptor);
            load.spritesheet(textureDescriptor.name,textureDescriptor.img,{frameWidth: 32, frameHeight: 32});
        })
        returnArray.push(layerArray)
    });
    return returnArray;
}
export const loadAllDefaultModels = (load: LoaderPlugin): BodyResourceDescriptionInterface[] => {
    const returnArray = Object.values(PLAYER_RESOURCES);
    returnArray.forEach((playerResource: BodyResourceDescriptionInterface) => {
        load.spritesheet(playerResource.name, playerResource.img, {frameWidth: 32, frameHeight: 32});
    });
    return returnArray;
}

export const loadCustomTexture = (loaderPlugin: LoaderPlugin, texture: CharacterTexture) : Promise<BodyResourceDescriptionInterface> => {
    const name = 'customCharacterTexture'+texture.id;
    const playerResourceDescriptor: BodyResourceDescriptionInterface = {name, img: texture.url, level: texture.level}
    return createLoadingPromise(loaderPlugin, playerResourceDescriptor, {
        frameWidth: 32,
        frameHeight: 32
    });
}

export const lazyLoadPlayerCharacterTextures = (loadPlugin: LoaderPlugin, texturekeys:Array<string|BodyResourceDescriptionInterface>): Promise<string[]> => {
    const promisesList:Promise<unknown>[] = [];
    texturekeys.forEach((textureKey: string|BodyResourceDescriptionInterface) => {
        try {
            //TODO refactor
            const playerResourceDescriptor = getRessourceDescriptor(textureKey);
            if (playerResourceDescriptor && !loadPlugin.textureManager.exists(playerResourceDescriptor.name)) {
                promisesList.push(createLoadingPromise(loadPlugin, playerResourceDescriptor, {
                    frameWidth: 32,
                    frameHeight: 32
                }));
            }
        }catch (err){
            console.error(err);
        }
    });
    let returnPromise:Promise<Array<string|BodyResourceDescriptionInterface>>;
    if (promisesList.length > 0) {
        loadPlugin.start();
        returnPromise = Promise.all(promisesList).then(() => texturekeys);
    } else {
        returnPromise = Promise.resolve(texturekeys);
    }

    //If the loading fail, we render the default model instead.
    return returnPromise.then((keys) => keys.map((key) => {
        return typeof key !== 'string' ? key.name : key;
    })).catch(() => lazyLoadPlayerCharacterTextures(loadPlugin, ["color_22", "eyes_23"]));
}

export const getRessourceDescriptor = (textureKey: string|BodyResourceDescriptionInterface): BodyResourceDescriptionInterface => {
    if (typeof textureKey !== 'string' && textureKey.img) {
        return textureKey;
    }
    const textureName:string = typeof textureKey === 'string' ? textureKey : textureKey.name;
    const playerResource = PLAYER_RESOURCES[textureName];
    if (playerResource !== undefined) return playerResource;

    for (let i=0; i<LAYERS.length;i++) {
        const playerResource = LAYERS[i][textureName];
        if (playerResource !== undefined) return playerResource;
    }
    throw 'Could not find a data for texture '+textureName;
}

export const createLoadingPromise = (loadPlugin: LoaderPlugin, playerResourceDescriptor: BodyResourceDescriptionInterface, frameConfig: FrameConfig) => {
    return new Promise<BodyResourceDescriptionInterface>((res, rej) => {
        console.log('count', loadPlugin.listenerCount('loaderror'));
        if (loadPlugin.textureManager.exists(playerResourceDescriptor.name)) {
            return res(playerResourceDescriptor);
        }
        loadPlugin.spritesheet(playerResourceDescriptor.name, playerResourceDescriptor.img, frameConfig);
        const errorCallback = (file: {src: string}) => {
            if (file.src !== playerResourceDescriptor.img) return;
            console.error('failed loading player ressource: ', playerResourceDescriptor)
            rej(playerResourceDescriptor);
            loadPlugin.off('filecomplete-spritesheet-' + playerResourceDescriptor.name, successCallback);
            loadPlugin.off('loaderror', errorCallback);
        }
        const successCallback = () => {
            loadPlugin.off('loaderror', errorCallback);
            res(playerResourceDescriptor);
        }

        loadPlugin.once('filecomplete-spritesheet-' + playerResourceDescriptor.name, successCallback);
        loadPlugin.on('loaderror', errorCallback);
    });
}