import React, {useState} from 'react';
import {ChevronDown, ChevronUp, Plus, Trash2} from 'lucide-react';
import {Incident} from '@/lib/types/book';
import {ActChapter, ChapterListProps} from '@/lib/types/chapter';
import ActChapterItem from './ActChapter';
import IconButton from '@/components/ui/IconButton';
import Collapse from '@/components/ui/Collapse';
import SelectBox, {SelectBoxProps} from '@/components/form/SelectBox';
import InputField from '@/components/form/InputField';
import TextInput from '@/components/form/TextInput';
import {useTranslations} from '@/lib/i18n';

interface ActIncidentsProps {
    incidents: Incident[];
    actId: number;
    mainChapters: ChapterListProps[];
    newIncidentTitle: string;
    setNewIncidentTitle: (title: string) => void;
    onAddIncident: (actId: number) => Promise<void>;
    onDeleteIncident: (actId: number, incidentId: string) => Promise<void>;
    onLinkChapter: (actId: number, chapterId: string, incidentId: string) => Promise<void>;
    onUpdateChapterSummary: (chapterId: string, summary: string, incidentId: string) => void;
    onUnlinkChapter: (chapterInfoId: string, chapterId: string, incidentId: string) => Promise<void>;
    sectionKey: string;
    isExpanded: boolean;
    onToggleSection: (sectionKey: string) => void;
}

export default function ActIncidents({
                                         incidents,
                                         actId,
                                         mainChapters,
                                         newIncidentTitle,
                                         setNewIncidentTitle,
                                         onAddIncident,
                                         onDeleteIncident,
                                         onLinkChapter,
                                         onUpdateChapterSummary,
                                         onUnlinkChapter,
                                         sectionKey,
                                         isExpanded,
                                         onToggleSection,
                                     }: ActIncidentsProps) {
    const t = useTranslations('actComponent');
    const [expandedItems, setExpandedItems] = useState<{ [key: string]: boolean }>({});
    const [selectedChapterId, setSelectedChapterId] = useState<string>('');
    
    function toggleItem(itemKey: string): void {
        setExpandedItems(prev => ({
            ...prev,
            [itemKey]: !prev[itemKey],
        }));
    }
    
    function mainChaptersData(): SelectBoxProps[] {
        return mainChapters.map(function (chapter: ChapterListProps): SelectBoxProps {
            return {
                value: chapter.chapterId,
                label: `${chapter.chapterOrder}. ${chapter.title}`,
            };
        });
    }

    return (
        <Collapse title={t('incidentsTitle')} defaultOpen={isExpanded}>
            <div className="space-y-3">
                {incidents && incidents.length > 0 ? (
                    incidents.map(function (item: Incident): React.JSX.Element {
                        const itemKey: string = `incident_${item.incidentId}`;
                        const isItemExpanded: boolean = expandedItems[itemKey];
                        
                        return (
                            <div key={`incident-${item.incidentId}`}
                                 className="bg-secondary rounded-xl overflow-hidden">
                                <button
                                    className="flex justify-between items-center w-full p-3 text-left"
                                    onClick={function (): void {
                                        toggleItem(itemKey);
                                    }}
                                >
                                    <span className="font-bold text-text-primary">{item.title}</span>
                                    <div className="flex items-center gap-1">
                                        {isItemExpanded
                                            ? <ChevronUp className="text-primary w-3.5 h-3.5" strokeWidth={1.75}/>
                                            : <ChevronDown className="text-primary w-3.5 h-3.5" strokeWidth={1.75}/>
                                        }
                                        <div onClick={function (e: React.MouseEvent): void {
                                            e.stopPropagation();
                                        }}>
                                            <IconButton
                                                icon={Trash2}
                                                variant="danger"
                                                size="sm"
                                                onClick={async function (): Promise<void> {
                                                    await onDeleteIncident(actId, item.incidentId);
                                                }}
                                            />
                                        </div>
                                    </div>
                                </button>
                                
                                {isItemExpanded && (
                                    <div className="p-3">
                                        {item.chapters && item.chapters.length > 0 ? (
                                            item.chapters.map(function (chapter: ActChapter): React.JSX.Element {
                                                return (
                                                    <ActChapterItem
                                                        key={`inc-chapter-${chapter.chapterId}-${chapter.chapterInfoId}`}
                                                        chapter={chapter}
                                                        onUpdateSummary={function (chapterId: string, summary: string): void {
                                                            onUpdateChapterSummary(chapterId, summary, item.incidentId);
                                                        }}
                                                        onUnlink={function (chapterInfoId: string, chapterId: string): Promise<void> {
                                                            return onUnlinkChapter(chapterInfoId, chapterId, item.incidentId);
                                                        }}
                                                    />
                                                );
                                            })
                                        ) : (
                                            <p className="text-text-secondary text-center text-sm p-2">
                                                {t('noLinkedChapter')}
                                            </p>
                                        )}
                                        
                                        <InputField
                                            input={
                                                <SelectBox
                                                    defaultValue={null}
                                                    onChangeCallBack={function (e: React.ChangeEvent<HTMLSelectElement>): void {
                                                        setSelectedChapterId(e.target.value);
                                                    }}
                                                    data={mainChaptersData()}
                                                    placeholder={t('selectChapterPlaceholder')}
                                                />
                                            }
                                            addButtonCallBack={function (): Promise<void> {
                                                return onLinkChapter(actId, selectedChapterId, item.incidentId);
                                            }}
                                            isAddButtonDisabled={selectedChapterId.length === 0}
                                        />
                                    </div>
                                )}
                            </div>
                        );
                    })
                ) : (
                    <p className="text-text-secondary text-center text-sm p-2">
                        {t('noIncidentAdded')}
                    </p>
                )}
                
                <InputField
                    input={
                        <TextInput
                            value={newIncidentTitle}
                            setValue={function (e: React.ChangeEvent<HTMLInputElement>): void {
                                setNewIncidentTitle(e.target.value);
                            }}
                            placeholder={t('newIncidentPlaceholder')}
                        />
                    }
                    actionIcon={Plus}
                    addButtonCallBack={function (): Promise<void> {
                        return onAddIncident(actId);
                    }}
                    isAddButtonDisabled={newIncidentTitle.trim() === ''}
                />
            </div>
        </Collapse>
    );
}