'use client';

import React, { useState, useRef } from 'react';
import { DataTable } from 'primereact/datatable';
import { Column } from 'primereact/column';
import { Button } from 'primereact/button';
import { InputText } from 'primereact/inputtext';
import { Dropdown } from 'primereact/dropdown';
import { Card } from 'primereact/card';
import { Toast } from 'primereact/toast';
import { Tag } from 'primereact/tag';
import { FilterMatchMode } from 'primereact/api';
import { materielService } from '../../../../services/api';
import { Materiel, TypeMateriel, StatutMateriel } from '../../../../types/btp';
import { formatCurrency } from '../../../../utils/formatters';

const RechercheMaterielsPage = () => {
    const [materiels, setMateriels] = useState<Materiel[]>([]);
    const [loading, setLoading] = useState(false);
    const [searchParams, setSearchParams] = useState({
        nom: '',
        type: '',
        marque: '',
        statut: '',
        localisation: ''
    });
    const toast = useRef<Toast>(null);
    const dt = useRef<DataTable<Materiel[]>>(null);

    const typeOptions = [
        { label: 'Tous les types', value: '' },
        ...Object.values(TypeMateriel).map(type => ({
            label: type.replace('_', ' '),
            value: type
        }))
    ];

    const statutOptions = [
        { label: 'Tous les statuts', value: '' },
        ...Object.values(StatutMateriel).map(statut => ({
            label: statut.replace('_', ' '),
            value: statut
        }))
    ];

    const rechercher = async () => {
        try {
            setLoading(true);
            const data = await materielService.search(searchParams);
            setMateriels(data);
            
            toast.current?.show({
                severity: 'success',
                summary: 'Recherche effectuée',
                detail: `${data.length} résultat(s) trouvé(s)`,
                life: 3000
            });
        } catch (error) {
            toast.current?.show({
                severity: 'error',
                summary: 'Erreur',
                detail: 'Erreur lors de la recherche',
                life: 3000
            });
        } finally {
            setLoading(false);
        }
    };

    const exportCSV = () => {
        dt.current?.exportCSV();
    };

    const onInputChange = (e: React.ChangeEvent<HTMLInputElement>, name: string) => {
        const val = (e.target && e.target.value) || '';
        setSearchParams(prev => ({ ...prev, [name]: val }));
    };

    const onDropdownChange = (e: any, name: string) => {
        setSearchParams(prev => ({ ...prev, [name]: e.value }));
    };

    const typeBodyTemplate = (rowData: Materiel) => {
        return (
            <Tag 
                value={rowData.type?.replace('_', ' ')} 
                severity={getTypeSeverity(rowData.type)} 
            />
        );
    };

    const statutBodyTemplate = (rowData: Materiel) => {
        return (
            <Tag 
                value={rowData.statut?.replace('_', ' ')} 
                severity={getStatutSeverity(rowData.statut)} 
            />
        );
    };

    const valeurBodyTemplate = (rowData: Materiel) => {
        return formatCurrency(rowData.valeurActuelle || rowData.valeurAchat);
    };

    const getTypeSeverity = (type?: TypeMateriel) => {
        switch (type) {
            case TypeMateriel.ENGIN_CHANTIER:
                return 'danger';
            case TypeMateriel.OUTIL_ELECTRIQUE:
                return 'warning';
            case TypeMateriel.EQUIPEMENT_SECURITE:
                return 'success';
            case TypeMateriel.VEHICULE:
                return 'info';
            default:
                return undefined;
        }
    };

    const getStatutSeverity = (statut?: StatutMateriel) => {
        switch (statut) {
            case StatutMateriel.DISPONIBLE:
                return 'success';
            case StatutMateriel.UTILISE:
                return 'warning';
            case StatutMateriel.MAINTENANCE:
                return 'info';
            case StatutMateriel.HORS_SERVICE:
                return 'danger';
            default:
                return undefined;
        }
    };

    return (
        <div className="grid">
            <div className="col-12">
                <Toast ref={toast} />
                
                <h2 className="mb-4">Recherche de Matériel</h2>

                <Card className="mb-4">
                    <h5>Critères de recherche</h5>
                    <div className="formgrid grid">
                        <div className="field col-12 md:col-4">
                            <label htmlFor="nom">Nom</label>
                            <InputText
                                id="nom"
                                value={searchParams.nom}
                                onChange={(e) => onInputChange(e, 'nom')}
                                placeholder="Nom du matériel"
                            />
                        </div>

                        <div className="field col-12 md:col-4">
                            <label htmlFor="marque">Marque</label>
                            <InputText
                                id="marque"
                                value={searchParams.marque}
                                onChange={(e) => onInputChange(e, 'marque')}
                                placeholder="Marque"
                            />
                        </div>

                        <div className="field col-12 md:col-4">
                            <label htmlFor="localisation">Localisation</label>
                            <InputText
                                id="localisation"
                                value={searchParams.localisation}
                                onChange={(e) => onInputChange(e, 'localisation')}
                                placeholder="Localisation"
                            />
                        </div>

                        <div className="field col-12 md:col-6">
                            <label htmlFor="type">Type</label>
                            <Dropdown
                                id="type"
                                value={searchParams.type}
                                onChange={(e) => onDropdownChange(e, 'type')}
                                options={typeOptions}
                            />
                        </div>

                        <div className="field col-12 md:col-6">
                            <label htmlFor="statut">Statut</label>
                            <Dropdown
                                id="statut"
                                value={searchParams.statut}
                                onChange={(e) => onDropdownChange(e, 'statut')}
                                options={statutOptions}
                            />
                        </div>
                    </div>
                    
                    <div className="flex gap-2">
                        <Button
                            label="Rechercher"
                            icon="pi pi-search"
                            className="p-button-text p-button-rounded"
                            onClick={rechercher}
                            loading={loading}
                        />
                        <Button
                            label="Effacer"
                            icon="pi pi-times"
                            severity={"secondary" as any}
                            className="p-button-text p-button-rounded"
                            onClick={() => setSearchParams({
                                nom: '',
                                type: '',
                                marque: '',
                                statut: '',
                                localisation: ''
                            })}
                        />
                    </div>
                </Card>

                {materiels.length > 0 && (
                    <Card>
                        <div className="flex justify-content-between align-items-center mb-4">
                            <h5>Résultats ({materiels.length})</h5>
                            <Button
                                label="Exporter"
                                icon="pi pi-upload"
                                severity="help"
                                className="p-button-text p-button-rounded"
                                onClick={exportCSV}
                            />
                        </div>

                        <DataTable
                            ref={dt}
                            value={materiels}
                            paginator
                            rows={10}
                            rowsPerPageOptions={[5, 10, 25]}
                            paginatorTemplate="FirstPageLink PrevPageLink PageLinks NextPageLink LastPageLink CurrentPageReport RowsPerPageDropdown"
                            currentPageReportTemplate="Affichage {first} à {last} de {totalRecords} matériels"
                            emptyMessage="Aucun résultat trouvé."
                        >
                            <Column field="nom" header="Nom" sortable />
                            <Column field="marque" header="Marque" sortable />
                            <Column field="modele" header="Modèle" sortable />
                            <Column field="type" header="Type" body={typeBodyTemplate} sortable />
                            <Column field="statut" header="Statut" body={statutBodyTemplate} sortable />
                            <Column field="localisation" header="Localisation" sortable />
                            <Column field="valeurActuelle" header="Valeur" body={valeurBodyTemplate} sortable />
                        </DataTable>
                    </Card>
                )}
            </div>
        </div>
    );
};

export default RechercheMaterielsPage;