import { Component, EventEmitter, Output, Input, OnInit, ElementRef } from '@angular/core';
import { OpenData, CardItem } from '../../pages/search/search';
import { BiblePassageResult, BibleService, BiblePassage, BibleVerse, HashTable, Paragraph } from '../../services/bible-service';
import { Reference } from '../../libs/Reference';
import { ProfileService } from '../../services/profile-service';

@Component({
    selector: 'passage',
    templateUrl: 'passage.html',
    providers: [BibleService]
})
export class Passage implements OnInit
{
    @Output()
    onItemClicked = new EventEmitter<OpenData>();
    @Output()
    onClose = new EventEmitter<CardItem>();

    @Input()
    cardItem: CardItem;

    @Input()
    versesOnNewLine: boolean;

    @Input()
    showVerseNumbers: boolean;

    data: BiblePassageResult;
    ref: Reference;

    constructor(private bibleService: BibleService, private elementRef: ElementRef, private profileService: ProfileService)
    {
    }

    ngOnInit(): void
    {
        this.ref = new Reference(this.cardItem.qry);
        this.bibleService.getResultAsPromise(this.ref.Section).then(data => this.data = data);
    }

    close()
    {
        let d = 250;
        this.elementRef.nativeElement.parentElement.animate({
            transform: ['none', 'translate3d(110%, 0, 0)']
        }, {
                fill: 'forwards',
                duration: d,
                iterations: 1,
                easing: 'ease-in-out'
            });
        setTimeout(() =>
        {
            this.onClose.emit(this.cardItem);
        }, d);
    }

    next()
    {
        const last_verse_for_end = this.ref.Section.end.book.chapters[parseInt(this.ref.Section.end.chapter)].toString();

        if (this.ref.Section.end.verse !== '*' && this.ref.Section.end.verse !== last_verse_for_end)
            this.ref.Section.end.chapter = this.ref.Section.end.chapter;
        else
            this.ref.Section.end.chapter = (parseInt(this.ref.Section.end.chapter) + 1).toString();

        this.ref.Section.start.chapter = this.ref.Section.end.chapter;
        this.ref.Section.start.verse = '1';
        this.ref.Section.end.verse = '*';

        this.bibleService.getResultAsPromise(this.ref.Section).then(data =>
        {
            this.data = data;
            this.cardItem.qry = data.ref;
            this.ref = new Reference(data.ref);
        });
    }

    prev()
    {
        if (this.ref.Section.start.verse !== '1')
            this.ref.Section.start.chapter = this.ref.Section.start.chapter;
        else
            this.ref.Section.start.chapter = (parseInt(this.ref.Section.start.chapter) - 1).toString();

        this.ref.Section.end.chapter = this.ref.Section.start.chapter;
        this.ref.Section.start.verse = '1';
        this.ref.Section.end.verse = '*';

        this.bibleService.getResultAsPromise(this.ref.Section).then(data =>
        {
            this.data = data;
            this.cardItem.qry = data.ref;
            this.ref = new Reference(data.ref);
        });
    }

    expand()
    {
        const last_verse_for_end = this.ref.Section.end.book.chapters[parseInt(this.ref.Section.end.chapter)];

        // if your verse is at the beginning, to go the prev chapter and add 3 verses from that
        if (parseInt(this.ref.Section.start.verse) < 4)
        {
            this.ref.Section.start.chapter = (parseInt(this.ref.Section.start.chapter) - 1).toString();
            this.ref.Section.start.verse = '*-' + (3 - parseInt(this.ref.Section.start.verse));
            if (this.ref.Section.start.chapter === '0')
            {
                this.ref.Section.start.chapter = '1';
                this.ref.Section.start.verse = '1';
            }
        }
        else // or go back 3 verses
            this.ref.Section.start.verse = (parseInt(this.ref.Section.start.verse) - 3).toString();

        // if your verse is at the end, go to the next chapter
        if (this.ref.Section.end.verse === '*' || parseInt(this.ref.Section.end.verse) + 3 > last_verse_for_end)
        {
            this.ref.Section.end.chapter = (parseInt(this.ref.Section.end.chapter) + 1).toString();
            if (this.ref.Section.end.verse === '*')
                this.ref.Section.end.verse = '3';
            else
                this.ref.Section.end.verse = (parseInt(this.ref.Section.end.verse) + 3 - last_verse_for_end).toString();

            if (this.ref.Section.end.chapter === (this.ref.Section.end.book.last_chapter + 1).toString())
            {
                this.ref.Section.end.chapter = this.ref.Section.end.book.last_chapter.toString();
                this.ref.Section.end.verse = last_verse_for_end.toString();
            }
        }
        else // or add 3 verses
            this.ref.Section.end.verse = (parseInt(this.ref.Section.end.verse) + 3).toString();

        if (this.ref.Section.start.verse === '0')
            this.ref.Section.start.verse = '1';

        this.bibleService.getResultAsPromise(this.ref.Section).then(data =>
        {
            this.data = data;
            this.cardItem.qry = data.ref;
            this.ref = new Reference(data.ref);
        });
    }

    openStrongs(strongs: string)
    {
        this.onItemClicked.emit({ card: this.cardItem, qry: this.cardItem.dict + strongs, from_search_bar: false });
    }

    openMenu(strongs: string)
    {
    }

    isPunct(c: string)
    {
        return new RegExp('^[\.\,\;\:\?\!]$').test(c);
    }

    hasHeader(p: Paragraph)
    {
        if (p === undefined)
            return false;

        return p.h.length > 0;
    }

    isPara(vs: BibleVerse)
    {
        return this.getRefKey(vs) in BibleService.paragraphs;
    }

    getRefKey(vs: BibleVerse)
    {
        return this.ref.Section.start.book.book_number + ';' + this.ref.Section.start.chapter + ';' + vs.v;
    }

    getParas(ch: BiblePassage)
    {
        // group the verses into paragraphs.
        
        // create an initial paragraph to hold verses that might come before a paragraph.
        let para: BiblePara = { p: { h: '', p: 0 }, vss: [] };
        let paras: BiblePara[] = [];

        // if you aren't showing paragraphs, stick em all in the same paragraph.
        if (!this.profileService.profile().show_paragraphs)
        {
            para.vss = ch.vss;
            paras.push(para);
            return paras;
        }

        // for each verse in the chapter, break them into paragraphs.
        for (let v of ch.vss)
        {
            if (this.isPara(v))
            {
                paras.push(para);
                para = { p: BibleService.paragraphs[this.getRefKey(v)], vss: [v] };
                if (para.p === undefined)
                    para.p = { h: '', p: 0 }; // just in case you can't find a paragraph.
            }
            else
            {
                para.vss.push(v);
            }
        }

        // add the final paragraph if it has verses.
        if (para.vss.length > 0)
            paras.push(para);

        return paras;
    }
}

type BiblePara = {
    p: Paragraph,
    vss: BibleVerse[],
}