OpenSlides/client/src/app/site/motions/services/motion-pdf-catalog.service.ts

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import { Injectable } from '@angular/core';
import { TranslateService } from '@ngx-translate/core';
import { ViewMotion, LineNumberingMode, ChangeRecoMode } from '../models/view-motion';
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import { MotionPdfService, InfoToExport } from './motion-pdf.service';
import { ConfigService } from 'app/core/ui-services/config.service';
import { ViewCategory } from '../models/view-category';
/**
* Service to export a list of motions.
*
* @example
* ```ts
* const docDef = this.motionPdfCatalogService.motionListToDocDef(myListOfViewMotions);
* ```
*/
@Injectable({
providedIn: 'root'
})
export class MotionPdfCatalogService {
/**
* Helper to add page breaks to documents
*/
private pageBreak = {
text: '',
pageBreak: 'after'
};
/**
* Constructor
*
* @param translate handle translations
* @param configService read out config variables
* @param motionPdfService handle motion to pdf conversion
*/
public constructor(
private translate: TranslateService,
private configService: ConfigService,
private motionPdfService: MotionPdfService
) {}
/**
* Converts the list of motions to pdfmake doc definition.
* Public entry point to conversion of multiple motions
*
* @param motions the list of view motions to convert
* @returns pdfmake doc definition as object
*/
public motionListToDocDef(
motions: ViewMotion[],
lnMode?: LineNumberingMode,
crMode?: ChangeRecoMode,
contentToExport?: string[],
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infoToExport?: InfoToExport[]
): object {
let doc = [];
const motionDocList = [];
for (let motionIndex = 0; motionIndex < motions.length; ++motionIndex) {
const motionDocDef: any = this.motionPdfService.motionToDocDef(
motions[motionIndex],
lnMode,
crMode,
contentToExport,
infoToExport
);
// add id field to the first page of a motion to make it findable over TOC
motionDocDef[0].id = `${motions[motionIndex].id}`;
motionDocList.push(motionDocDef);
if (motionIndex < motions.length - 1) {
motionDocList.push(this.pageBreak);
}
}
// print extra data (title, preamble, categories, toc) only if there are more than 1 motion
if (motions.length > 1) {
doc.push(this.createTitle(), this.createPreamble(), this.createToc(motions));
}
doc = doc.concat(motionDocList);
return doc;
}
/**
* Creates the title for the motion list as pdfmake doc definition
*
* @returns The motion list title for the PDF document
*/
private createTitle(): object {
const titleText = this.configService.instant<string>('motions_export_title');
return {
text: titleText,
style: 'title'
};
}
/**
* Creates the preamble for the motion list as pdfmake doc definition
*
* @returns The motion list preamble for the PDF document
*/
private createPreamble(): object {
const preambleText = this.configService.instant<string>('motions_export_preamble');
if (preambleText) {
return {
text: preambleText,
style: 'preamble'
};
} else {
return {};
}
}
/**
* Creates the table of contents for the motion book.
* Considers sorting by categories and no sorting.
*
* @param motions The motions to add in the TOC
* @param sorting The optional sorting strategy
* @returns the table of contents as document definition
*/
private createToc(motions: ViewMotion[], sorting?: string): object {
const toc = [];
const categories: ViewCategory[] = this.getUniqueCategories(motions);
// Create the toc title
const tocTitle = {
text: this.translate.instant('Table of contents'),
style: 'heading2'
};
if (!sorting) {
sorting = this.configService.instant<string>('motions_export_category_sorting');
}
const exportCategory = sorting === 'identifier' || sorting === 'prefix';
if (exportCategory && categories) {
const catTocBody = [];
for (const category of categories) {
// push the name of the category
// make a table for correct alignment
catTocBody.push({
table: {
body: [
[
{
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text: category.prefix ? category.prefix + ' - ' + category.name : category.name,
style: 'tocCategoryTitle'
}
]
]
},
layout: 'noBorders'
});
const tocBody = motions
.filter(motion => category === motion.category)
.map(motion => this.createTocLine(motion, 'tocCategoryEntry'));
catTocBody.push(this.createTocTableDef(tocBody));
}
// handle those without category
const uncatTocBody = motions
.filter(motion => !motion.category)
.map(motion => this.createTocLine(motion, 'tocEntry'));
// only push this array if there is at least one entry
if (uncatTocBody.length > 0) {
catTocBody.push(this.createTocTableDef(uncatTocBody));
}
toc.push(catTocBody);
} else {
// all motions in the same table
const tocBody = motions.map(motion => this.createTocLine(motion, 'tocEntry'));
toc.push(this.createTocTableDef(tocBody));
}
return [tocTitle, toc, this.pageBreak];
}
/**
* Generates the table definition for the TOC
*
* @param tocBody the body of the table
* @returns The table of contents as doc definition
*/
private createTocTableDef(tocBody: object): object {
return {
table: {
widths: ['auto', '*', 'auto'],
body: tocBody
},
layout: 'noBorders',
style: 'tocCategorySection'
};
}
/**
* Generates a line in the TOC as list object
*
* @param motion motion to make a toc entry to
* @param style the desired style
*/
private createTocLine(motion: ViewMotion, style: string): object {
const firstColumn = motion.identifier;
return [
{
text: firstColumn,
style: style
},
{
text: motion.title,
style: 'tocEntry'
},
{
pageReference: `${motion.id}`,
style: 'tocEntry',
alignment: 'right'
}
];
}
/**
* Extract the used categories from the given motion list.
*
* @param motions the list of motions
* @returns Unique list of categories
*/
private getUniqueCategories(motions: ViewMotion[]): ViewCategory[] {
const categories: ViewCategory[] = motions
// remove motions without category
.filter(motion => !!motion.category)
// map motions their categories
.map(motion => motion.category)
// remove redundancies
.filter(
(category, index, self) =>
index ===
self.findIndex(compare => compare.prefix === category.prefix && compare.name === category.name)
);
return categories;
}
}