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40 lines
1.2 KiB
40 lines
1.2 KiB
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import {Request, Response} from 'express';
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import {LESSONS} from "./db-data";
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import {setTimeout} from "timers";
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export function searchLessons(req: Request, res: Response) {
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console.log('Searching for lessons ...');
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const queryParams = req.query;
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const courseId = queryParams.courseId,
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filter = queryParams.filter || '',
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sortOrder = queryParams.sortOrder || 'asc',
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pageNumber = parseInt(queryParams.pageNumber) || 0,
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pageSize = parseInt(queryParams.pageSize);
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let lessons = Object.values(LESSONS).filter(lesson => lesson.courseId == courseId).sort((l1, l2) => l1.id - l2.id);
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if (filter) {
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lessons = lessons.filter(lesson => lesson.description.trim().toLowerCase().search(filter.toLowerCase()) >= 0);
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}
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if (sortOrder == "desc") {
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lessons = lessons.reverse();
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}
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const initialPos = pageNumber * pageSize;
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console.log(`Retrieving lessons page starting at position ${initialPos}, page size ${pageSize} for course ${courseId}`);
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const lessonsPage = lessons.slice(initialPos, initialPos + pageSize);
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res.status(200).json(lessonsPage);
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}
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