/*
  The MIT License
  
  Copyright (c) 2017-2019 EclipseSource Munich
  https://github.com/eclipsesource/jsonforms
  
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  THE SOFTWARE.
*/
// tslint:disable:jsx-no-multiline-js
// tslint:disable:jsx-no-lambda
import keys from 'lodash/keys';
import isEmpty from 'lodash/isEmpty';
import find from 'lodash/find';
import merge from 'lodash/merge';
import DialogActions from '@material-ui/core/DialogActions';
import DialogTitle from '@material-ui/core/DialogTitle';
import { connect } from 'react-redux';
import {
    getData,
    getDefaultData,
    getSchema, JsonFormsState,
    JsonSchema,
    JsonSchema7,
    Paths,
    Resolve,
    update
} from '@jsonforms/core';
import { findContainerProperties, findPropertyLabel, Property } from '../services/property.util';
import Button from '@material-ui/core/Button';
import DialogContent from '@material-ui/core/DialogContent';
import React from 'react';
import Dialog from '@material-ui/core/Dialog';
import List from '@material-ui/core/List';
import ListItem from '@material-ui/core/ListItem';
import ListItemText from '@material-ui/core/ListItemText';
import { ListItemIcon } from '@material-ui/core';
import { wrapImageIfNecessary } from '../helpers/image-provider.util';
import { SchemaLabelProvider } from '../helpers/LabelProvider';
import { AnyAction, Dispatch } from 'redux';

export interface AddItemDialogProps {
    rootData: any;
    containerProperties: Property[];
    rootSchema: any;
    path: string;
    schema: JsonSchema;
    closeDialog: any;
    dialogProps: any;
    setSelection: any;
    add?: any;
    labelProvider?: SchemaLabelProvider;
    defaultData: { schemaPath: string, data: any}[];
    imageProvider(schema: JsonSchema): string;
}

const createData = (defaultData: any, prop: Property) => {
    const foundData = find(defaultData, d => {
        return d.schemaPath === prop.schemaPath;
    });

    // default behavior is to read default property from schemas
    const predefined = keys(prop.schema.properties).reduce(
        (acc: any, key: string) => {
            if (prop.schema.properties[key].default) {
                acc[key] = prop.schema.properties[key].default;
            }

            // FIXME generate id if identifying property
            // is set in editor to allow id refs
            return acc;
        },
        {}
    );

    return merge(foundData ? foundData.data : {}, predefined);
};

const createPropLabel =
    (prop: Property, labelProvider: (schema: JsonSchema, path: string) => string) => {
        let label = prop.label;
        if (labelProvider) {
            label = labelProvider(prop.schema, prop.schemaPath);
        }
        return `${prop.property} [${label}]`;
    };

class AddItemDialog extends React.Component<AddItemDialogProps, {}> {

    onClick = (prop: Property) => {
        const { add, closeDialog, defaultData, path, rootData, setSelection } = this.props;
        const newData = createData(defaultData, prop);

        const arrayPath = Paths.compose(path, prop.property);
        const array = Resolve.data(rootData, arrayPath) as any[];
        const selectionIndex = isEmpty(array) ? 0 : array.length;
        const selectionPath = Paths.compose(arrayPath, selectionIndex.toString());

        add(path, prop, newData);
        setSelection(prop.schema, newData, selectionPath)();
        closeDialog();
    };

    render() {
        const {
            closeDialog,
            dialogProps,
            /**
             * Self contained schemas of the corresponding schema
             */
            containerProperties,
            imageProvider,
            labelProvider,
        } = this.props;

        return (
            <Dialog id='dialog' {...dialogProps}>
                <DialogTitle id='dialog-title'>
                    Select item to create
                </DialogTitle>
                <DialogContent>
                    <List>
                        {
                            containerProperties
                                .map((prop, index) => {
                                    const label = createPropLabel(prop, labelProvider);
                                    return (
                                        <ListItem
                                            button
                                            key={`${findPropertyLabel(prop)}-button-${index}`}
                                            onClick={() => this.onClick(prop)}
                                        >
                                            <ListItemIcon>
                                                {wrapImageIfNecessary(imageProvider(prop.schema))}
                                            </ListItemIcon>
                                            <ListItemText primary={label} />
                                        </ListItem>
                                    );
                                })
                        }
                    </List>
                </DialogContent>
                <DialogActions>
                    <Button onClick={closeDialog} variant='outlined' color='primary'>
                        Close
                    </Button>
                </DialogActions>
            </Dialog>
        );
    }
}

// TODO
const mapStateToProps = (state: JsonFormsState, ownProps: any) => {
    const containerProperties = findContainerProperties(ownProps.schema, getSchema(state) as JsonSchema7, false);

    return {
        rootData: getData(state),
        defaultData: getDefaultData(state),
        containerProperties,
        rootSchema: getSchema(state),
        path: ownProps.path,
        schema: ownProps.schema,
        closeDialog: ownProps.closeDialog,
        dialogProps: ownProps.dialogProps,
        setSelection: ownProps.setSelection,
        labelProvider: ownProps.labelProvider
    };
};

const mapDispatchToProps = (dispatch: Dispatch<AnyAction>) => ({
    add(path: string, prop: Property, newData: any) {
        dispatch(
            update(
                Paths.compose(path, prop.property),
                array => {
                    if (isEmpty(array)) {
                        return [newData];
                    }
                    array.push(newData);

                    return array;
                }
            )
        );
    }
});

export default connect(mapStateToProps, mapDispatchToProps)(AddItemDialog);