import React, { useRef, useEffect, useState } from 'react';
import { classNames } from 'primereact/utils';
import { __ } from '@wordpress/i18n';
import { head } from 'ramda';

// components
import { InputText } from 'primereact/inputtext';
import { Button } from 'primereact/button';
import { Menu } from 'primereact/menu';
import { Dropdown } from 'primereact/dropdown';
import { InputNumber } from 'primereact/inputnumber';

const FormFieldRepeaterCriteria = ({
                                       data,
                                       setDataFn,
                                       fieldName,
                                       options = [],
                                       errors,
                                       register,
                                       label,
                                       infoText,
                                       config = {}
                                   }) => {
    const forMenu = useRef(null);
    const [stateFieldData, setStateFieldData] = useState([]);
    const [threshold, setThreshold] = useState(0);
    const menuItems = [
        {
            type: 'existing',
            label: __('Esistente', 'gepafin'),
            command: (data) => {
                setStateFieldData([...stateFieldData, { id: null, value: '', status: data.item.type }]);
            }
        },
        {
            type: 'new',
            label: __('Nuovo', 'gepafin'),
            command: (data) => {
                setStateFieldData([...stateFieldData, { id: null, value: '', status: data.item.type }]);
            }
        }
    ]

    const removeItem = (index) => {
        const newData = stateFieldData.toSpliced(index, 1);
        setStateFieldData(newData);
    }

    const selectItem = (e, index) => {
        const targetedOption = head(options.filter(o => o.value === e.value));
        if (targetedOption) {
            const newData = stateFieldData.map((o, i) => {
                if (i === index) {
                    o.value = targetedOption.value;
                    o.score = targetedOption.score;
                    o.id = targetedOption.id;
                }
                return o;
            });
            console.log('newData', newData)
            setStateFieldData(newData);
        }
    }

    const onInputChange = (value, index, name) => {
        const newData = stateFieldData.map((o, i) => {
            if (i === index) {
                o[name] = value;
            }
            return o;
        })
        setStateFieldData(newData);
    }

    const onThresholdChange = (value) => {
        setThreshold(value);
        setDataFn('threshold', value, { shouldValidate: true });
    }

    const properField = (item, i) => {
        return item.status === 'new'
            ? <InputText value={item.value} onInput={(e) => onInputChange(e.target.value, i, 'value')}/>
            : <Dropdown value={item.value}
                        onChange={(e) => selectItem(e, i)}
                        optionDisabled={(opt) => usedExistingValues.includes(opt.value)}
                        options={options} optionLabel="value"/>
    }

    const usedExistingValues = stateFieldData
        .filter(o => o.status === 'existing')
        .map(o => o.value);

    useEffect(() => {
        const storeFieldData = data[fieldName] ?? [];
        const newData = storeFieldData.map(o => ({ ...o, status: o.id ? 'existing' : 'new' }));
        setStateFieldData(newData);
        setThreshold(data['threshold'])
        register(fieldName, config)
        register('threshold', {
            required: __('È obbligatorio', 'gepafin')
        })
    }, [])

    useEffect(() => {
        setDataFn(fieldName, [...stateFieldData], { shouldValidate: true });
    }, [stateFieldData])

    return (
        <div className={classNames(['appForm__field', 'formfieldrepeater'])}>
            <label htmlFor={fieldName} className={classNames({ 'p-error': errors[fieldName] || errors['threshold'] })}>
                {label}
            </label>
            <div className="appForm__oneCol">
                <label htmlFor="criterionThreshold">{__('Punteggio minimo per l’ammissione', 'gepafin')}</label>
                <InputNumber inputId="criterionThreshold"
                             value={threshold}
                             showButtons
                             onValueChange={(e) => onThresholdChange(e.value)}/>
            </div>
            {stateFieldData.map((o, i) => <div key={i}
                                               className={classNames('appForm__field', 'appForm__repeaterItem')}>
                <div className="appForm__twoCols">
                    <div>
                        <label>{__('Nome criterio di valutazione', 'gepafin')}</label>
                        <div className="p-inputgroup flex-1">
                        {properField(o, i)}
                            <Button icon="pi pi-times" className="p-button-danger" onClick={() => removeItem(i)}/>
                        </div>
                        {o.status === 'new' && infoText ? <small>{infoText}</small> : null}
                    </div>
                    <div>
                        <label htmlFor="criterionMin">{__('Punteggio', 'gepafin')}</label>
                        <InputNumber inputId="criterionMin"
                                     value={o.score}
                                     showButtons
                                     onValueChange={(e) => onInputChange(e.value, i, 'score')}/>
                    </div>
                </div>
            </div>)}
            <Menu model={menuItems} popup ref={forMenu} id="aimedForMenu"/>
            <Button type="button" iconPos="right" label={__('Aggiungi', 'gepafin')}
                    icon="pi pi-chevron-down" onClick={(event) => forMenu.current.toggle(event)}
                    aria-controls="aimedForMenu" aria-haspopup/>
        </div>
    )
}

export default FormFieldRepeaterCriteria;