// Copyright (C) The Arvados Authors. All rights reserved.
//
// SPDX-License-Identifier: AGPL-3.0

import * as React from 'react';
import { reduxForm, Field } from 'redux-form';
import { compose } from 'redux';
import { TextField } from '~/components/text-field/text-field';
import { Dialog, DialogActions, DialogContent, DialogTitle } from '@material-ui/core/';
import { Button, StyleRulesCallback, WithStyles, withStyles, CircularProgress } from '@material-ui/core';

import { COLLECTION_NAME_VALIDATION, COLLECTION_DESCRIPTION_VALIDATION } from '~/validators/create-collection/create-collection-validator';
import { FileUpload } from "~/components/file-upload/file-upload";
import { connect, DispatchProp } from "react-redux";
import { RootState } from "~/store/store";
import { collectionUploaderActions, UploadFile } from "~/store/collections/uploader/collection-uploader-actions";

type CssRules = "button" | "lastButton" | "formContainer" | "textField" | "createProgress" | "dialogActions";

const styles: StyleRulesCallback<CssRules> = theme => ({
    button: {
        marginLeft: theme.spacing.unit
    },
    lastButton: {
        marginLeft: theme.spacing.unit,
        marginRight: "20px",
    },
    formContainer: {
        display: "flex",
        flexDirection: "column",
    },
    textField: {
        marginBottom: theme.spacing.unit * 3
    },
    createProgress: {
        position: "absolute",
        minWidth: "20px",
        right: "110px"
    },
    dialogActions: {
        marginBottom: theme.spacing.unit * 3
    }
});

interface DialogCollectionCreateProps {
    open: boolean;
    handleClose: () => void;
    onSubmit: (data: { name: string, description: string }, files: UploadFile[]) => void;
    handleSubmit: any;
    submitting: boolean;
    invalid: boolean;
    pristine: boolean;
    files: UploadFile[];
}

export const COLLECTION_CREATE_DIALOG = "collectionCreateDialog";

export const DialogCollectionCreate = compose(
    connect((state: RootState) => ({
        files: state.collections.uploader
    })),
    reduxForm({ form: COLLECTION_CREATE_DIALOG }),
    withStyles(styles))(
        class DialogCollectionCreate extends React.Component<DialogCollectionCreateProps & DispatchProp & WithStyles<CssRules>> {
            render() {
                const { classes, open, handleClose, handleSubmit, onSubmit, submitting, invalid, pristine, files } = this.props;
                const busy = submitting || files.reduce(
                    (prev, curr) => prev + (curr.loaded > 0 && curr.loaded < curr.total ? 1 : 0), 0
                ) > 0;
                return (
                    <Dialog
                        open={open}
                        onClose={handleClose}
                        fullWidth={true}
                        maxWidth='sm'
                        disableBackdropClick={true}
                        disableEscapeKeyDown={true}>
                        <form onSubmit={handleSubmit((data: any) => onSubmit(data, files))}>
                            <DialogTitle id="form-dialog-title">Create a collection</DialogTitle>
                            <DialogContent className={classes.formContainer}>
                                <Field name="name"
                                    disabled={submitting}
                                    component={TextField}
                                    validate={COLLECTION_NAME_VALIDATION}
                                    className={classes.textField}
                                    label="Collection Name" />
                                <Field name="description"
                                    disabled={submitting}
                                    component={TextField}
                                    validate={COLLECTION_DESCRIPTION_VALIDATION}
                                    className={classes.textField}
                                    label="Description - optional" />
                                <FileUpload
                                    files={files}
                                    disabled={busy}
                                    onDrop={files => this.props.dispatch(collectionUploaderActions.SET_UPLOAD_FILES(files))} />
                            </DialogContent>
                            <DialogActions className={classes.dialogActions}>
                                <Button onClick={handleClose} className={classes.button} color="primary"
                                    disabled={busy}>CANCEL</Button>
                                <Button type="submit"
                                    className={classes.lastButton}
                                    color="primary"
                                    disabled={invalid || busy || pristine}
                                    variant="contained">
                                    CREATE A COLLECTION
                            </Button>
                                {busy && <CircularProgress size={20} className={classes.createProgress} />}
                            </DialogActions>
                        </form>
                    </Dialog>
                );
            }
        }
    );