// Copyright 2021 The casbin Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import React, {useState} from "react";
import Cropper from "react-cropper";
import "cropperjs/dist/cropper.css";
import * as Setting from "./Setting";
import {Button, Row, Col, Modal} from 'antd';
import i18next from "i18next";

export const CropperDiv = (props) => {
    const [image, setImage] = useState("");
    const [cropper, setCropper] = useState();
    const [visible, setVisible] = React.useState(false);
    const [confirmLoading, setConfirmLoading] = React.useState(false);
    const {title} = props;
    const {targetFunction} = props;
    const {buttonText} = props;
    let uploadButton;

    const onChange = (e) => {
        e.preventDefault();
        let files;
        if (e.dataTransfer) {
            files = e.dataTransfer.files;
        } else if (e.target) {
            files = e.target.files;
        }
        const reader = new FileReader();
        reader.onload = () => {
            setImage(reader.result);
        };
        if (!(files[0] instanceof Blob)) {
            return;
        }
        reader.readAsDataURL(files[0]);
    };

    const uploadAvatar = () => {
        let canvas = cropper.getCroppedCanvas();
        if (canvas === null) {
            Setting.showMessage("error", "You must select a picture first!");
            return false;
        }
        Setting.showMessage("success", "uploading...");
        targetFunction(canvas.toDataURL());
        return true;
    }

    const showModal = () => {
        setVisible(true);
    };

    const handleOk = () => {
        setConfirmLoading(true);
        if (!uploadAvatar()) {
            setConfirmLoading(false);
        }
    };

    const handleCancel = () => {
        console.log('Clicked cancel button');
        setVisible(false);
    };

    const selectFile = () => {
        uploadButton.click();
    }

    return (
        <div>
            <Button type="default" onClick={showModal}>
                {buttonText}
            </Button>
            <Modal
                maskClosable={false}
                title={title}
                visible={visible}
                okText={i18next.t("user:Upload a photo")}
                confirmLoading={confirmLoading}
                onCancel={handleCancel}
                width={600}
                footer={
                    [<Button block type="primary" onClick={handleOk}>{i18next.t("user:Set new profile picture")}</Button>]
                }
            >
                <Col style={{margin: "0px auto 40px auto", width: 1000, height: 300}}>
                    <Row style={{width: "100%", marginBottom: "20px"}}>
                        <input style={{display: "none"}} ref={input => uploadButton = input} type="file" onChange={onChange}/>
                        <Button block onClick={selectFile}>{i18next.t("user:Select a photo...")}</Button>
                    </Row>
                    <Cropper
                      style={{height: "100%"}}
                      initialAspectRatio={1}
                      preview=".img-preview"
                      src={image}
                      viewMode={1}
                      guides={true}
                      minCropBoxHeight={10}
                      minCropBoxWidth={10}
                      background={false}
                      responsive={true}
                      autoCropArea={1}
                      checkOrientation={false}
                      onInitialized={(instance) => {
                          setCropper(instance);
                      }}
                    />
                </Col>
            </Modal>
        </div>
    )
}

export default CropperDiv;