import { useState, Fragment } from 'react';
import api from '../utils/api';
import 'notyf/notyf.min.css';

const EditFormFunction = (props) => {

    const [inputsArray, setInputsArray] = useState(props.functionInfo.utilizationForm || []);

    const addInput = () => {
        const newInputsArray = [...inputsArray];
        newInputsArray.push({ name: "", label: "", placeholder: "", type: "text" });
        setInputsArray(newInputsArray);
    }

    const addOption = (event) => {
        const newInputsArray = [...inputsArray];
        const index          = event.target.id.split('-')[1];
        const inputObject    = newInputsArray[index];
        inputObject.options.push({ name: "", value: "" });
        setInputsArray(newInputsArray);
    }

    const handleChangeOption = (inputIndex, optionIndex, event) => {
        const newInputsArray = [...inputsArray];
        const inputObject    = newInputsArray[inputIndex];
        const optionObject   = inputObject.options[optionIndex];
        optionObject[event.target.name] = event.target.value;
        setInputsArray(newInputsArray);
    }

    const handleChangeInput = (event) => {
        const       newInputsArray     = [...inputsArray];
        const       index              = event.target.id.split('-')[1];
        const       inputObject        = newInputsArray[index];
        inputObject[event.target.name] = event.target.value;
        if (event.target.value === "select") {
            inputObject.options = [];
        }
        setInputsArray(newInputsArray);
    }

    const handleSubmit = async (event) => {
        event.preventDefault();
        let Notyf;
        if (typeof window != 'undefined') {
            Notyf = require('notyf');
        }
        const notyf = new Notyf.Notyf({
            duration: 5000
        });
        try {
            await api.put(`/admin/functions/form/${props.functionInfo.id}`, { form: inputsArray }, { headers: { 'Authorization': props.user.token } });
            notyf.success('Sauvegardé!');
        } catch (error) {
            notyf.error('Erreur!');
        }
    }

    const handleRemoveInput = (event) => {
        const newInputsArray = [...inputsArray];
        const index          = event.target.id.split('-')[1];
        newInputsArray.splice(index, 1);
        setInputsArray(newInputsArray);
    }

    const handleRemoveOption = (inputIndex, optionIndex) => {
        const newInputsArray = [...inputsArray];
        const inputObject    = newInputsArray[inputIndex];
        const optionsArray   = inputObject.options;
        optionsArray.splice(optionIndex, 1);
        setInputsArray(newInputsArray);
    }

    return (
        <div className="container-fluid">

            <form onSubmit={handleSubmit}>

                {(inputsArray.length > 0) &&                
                    <div className="form-group text-center">
                        <button type="submit" className="btn btn-dark">Sauvegarder</button>
                    </div>
                }

                {inputsArray.map((input, index) => {
                    return (
                        <div key={index} className="form-group Admin__Input-group">

                            <div className="text-center">
                                <button type="button" onClick={handleRemoveInput} id={`remove-${index}`} className="btn btn-dark">Supprimer l'input</button>
                            </div>

                            <label className="form-label" htmlFor={`name-${index}`}>Nom de l'input :</label>
                            <input value={input.name} onChange={handleChangeInput} type="text" name="name" id={`name-${index}`} className="form-control" placeholder="(e.g : cityName)" />
                            <br/>

                            <label className="form-label" htmlFor={`label-${index}`}>Label :</label>
                            <input value={input.label} onChange={handleChangeInput} type="text" name="label" id={`label-${index}`} className="form-control" placeholder="(e.g : Entrez le nom d'une ville :)" />
                            <br/>
                            
                            {(input.type !== "select") && 
                                <Fragment>
                                    <label className="form-label" htmlFor={`placeholder-${index}`}>Placeholder :</label>
                                    <input value={input.placeholder} onChange={handleChangeInput} type="text" name="placeholder" id={`placeholder-${index}`} className="form-control" placeholder="(e.g : Paris, FR)" />
                                    <br/>
                                </Fragment>
                            }

                            <label className="form-label" htmlFor={`type-${index}`}>Type :</label>
                            <select value={input.type} onChange={handleChangeInput} name="type" id={`type-${index}`} className="form-control">
                                <option value="text">text</option>
                                <option value="integer">Number integer</option>
                                <option value="float">Number float</option>
                                <option value="calendar">calendar</option>
                                <option value="select">select</option>
                            </select>

                            {(input.type === "select") &&
                                <div style={{ marginTop: '50px' }}>

                                    <label className="form-label">Options :</label>

                                    {input.options.map((option, optionIndex) => {
                                        return (
                                            <div key={optionIndex} style={{ margin: "0 0 30px 0" }} className="form-group Admin__Input-group">
                                                <div className="text-center">
                                                    <button type="button" onClick={() => handleRemoveOption(index, optionIndex)} className="btn btn-dark">Supprimer l'option</button>
                                                </div>

                                                <label className="form-label" htmlFor={`optionName-${optionIndex}-${index}`}>Nom de l'option</label>
                                                <input onChange={(event) => handleChangeOption(index, optionIndex, event)} value={option.name} id={`optionName-${optionIndex}-${index}`} name="name" type="text"className="form-control" placeholder="Nom de l'option" />

                                                <br />
                                                <label className="form-label" htmlFor={`optionValue-${optionIndex}-${index}`}>Valeur de l'option</label>
                                                <input onChange={(event) => handleChangeOption(index, optionIndex, event)} value={option.value} id={`optionValue-${optionIndex}-${index}`} name="value" type="text"className="form-control" placeholder="Valeur de l'option" />
                                            </div>
                                        );
                                    })}

                                    <div className="form-group text-center">
                                        <button id={`optionAdd-${index}`} onClick={addOption} type="button" className="btn btn-dark">Ajouter une option</button>
                                    </div>
                                </div> 
                            }
                        </div>
                    );
                })}

            </form>

            <div style={{ marginBottom: '30px' }} className="form-group text-center">
                <button type="button" onClick={addInput} className="btn btn-dark">Ajouter un input</button>
            </div>
        </div>
    );
}

export default EditFormFunction;