@tiledesk/tiledesk-server/routes/answered.js

The Tiledesk server module

const express = require('express');
const router = express.Router();
const { Namespace, AnsweredQuestion } = require('../models/kb_setting');
const winston = require('../config/winston');
var fastCsv = require('fast-csv');
const kbQuestionService = require('../services/kbQuestionService');

// Add a new unanswerd question
router.post('/', async (req, res) => {
  try {

    const data = req.body;
    const id_project = req.projectid;

    const savedQuestion = await kbQuestionService.createAnsweredQuestion(
      id_project, 
      data
    );

    res.status(200).json(savedQuestion);

  } catch (error) {
    winston.error('Error adding answered question:', error);
    res.status(error.status || 500).json({
      success: false,
      error: error.error || "Error adding answered question"
    });
  }
})

// Get all answered questions for a namespace
router.get('/:namespace', async (req, res) => {

  try {
    const { namespace } = req.params;
    const id_project = req.projectid;

    if (!namespace) {
      return res.status(400).json({
        success: false,
        error: "Missing required parameter: namespace"
      })
    }

    // Check if namespace belongs to project
    const isValidNamespace = await validateNamespace(id_project, namespace);
    if (!isValidNamespace) {
      return res.status(403).json({
        success: false,
        error: "Not allowed. The namespace does not belong to the current project."
      })
    }

    const page = parseInt(req.query.page) || 0;
    const limit = parseInt(req.query.limit) || 20;
    const sortField = req.query.sortField || 'createdAt';
    const direction = parseInt(req.query.direction) || -1;

    const filter = { id_project, namespace };

    let projection = undefined;

    if (req.query.search) {
      filter.$text = { $search: req.query.search };
      // Add score to projection if it's a text search
      projection = { score: { $meta: "textScore" } };
    }

    let sortObj;
    if (projection && projection.score) {
      sortObj = { score: { $meta: "textScore" } };
    } else {
      sortObj = { [sortField]: direction };
    }

    const questions = await AnsweredQuestion.find(filter, projection)
      .sort(sortObj)
      .skip(page * limit)
      .limit(limit);

    const count = await AnsweredQuestion.countDocuments(filter);

    res.status(200).json({
      count,
      questions,
      query: {
        page,
        limit,
        sortField,
        direction,
        search: req.query.search || undefined
      }
    });

  } catch (error) {
    winston.error('Error getting answered questions:', error);
    res.status(500).json({
      success: false,
      error: "Error getting answered questions"
    });
  }

})

router.delete('/:id', async (req, res) => {
  try {
    const { id } = req.params;
    const id_project = req.projectid;

    const deleted = await AnsweredQuestion.findOneAndDelete({ _id: id, id_project });
    if (!deleted) {
      return res.status(404).json({
        success: false,
        error: "Question not found"
      });
    }

    res.status(200).json({
      success: true,
      message: "Question deleted successfully"
    });

  } catch (error) {
    winston.error('Error deleting answered question:', error);
    res.status(500).json({
      success: false,
      error: "Error deleting answered question"
    });
  }
})

router.delete('/namespace/:namespace', async (req, res) => {
  try {
    const { namespace } = req.params;
    const id_project = req.projectid;

    // Check if namespace belongs to project
    const isValidNamespace = await validateNamespace(id_project, namespace);
    if (!isValidNamespace) {
      return res.status(403).json({
        success: false,
        error: "Not allowed. The namespace does not belong to the current project."
      });
    }

    const result = await AnsweredQuestion.deleteMany({ id_project, namespace });
    res.status(200).json({
      success: true,
      count: result.deletedCount,
      message: "All questions deleted successfully"
    });

  } catch (error) {
    winston.error('Error deleting answered questions:', error);
    res.status(500).json({
      success: false,
      error: "Error deleting answered questions"
    });
  }
})

router.get('/count/:namespace', async (req, res) => {
  try {
    const { namespace } = req.params;
    const id_project = req.projectid;

    if (!namespace) {
      return res.status(400).json({
        success: false,
        error: "Missing required parameter: namespace"
      });
    }

    // Check if namespace belongs to project
    const isValidNamespace = await validateNamespace(id_project, namespace);
    if (!isValidNamespace) {
      return res.status(403).json({
        success: false,
        error: "Not allowed. The namespace does not belong to the current project."
      });
    }

    const count = await AnsweredQuestion.countDocuments({ id_project, namespace });
    res.status(200).json({ count });

  } catch (error) {
    winston.error('Error counting answered questions:', error);
    res.status(500).json({
      success: false,
      error: "Error counting answered questions"
    });
  }
})

router.get('/:namespace/export', async (req, res) => {
  try {
    const { namespace } = req.params;
    const id_project = req.projectid;
    const mode = String(req.query.mode || 'csv').toLowerCase();

    if (mode !== 'csv' && mode !== 'json') {
      return res.status(400).json({
        success: false,
        error: 'Invalid format. Use mode=json or mode=csv'
      });
    }

    const isValidNamespace = await validateNamespace(id_project, namespace);
    if (!isValidNamespace) {
      return res.status(403).json({
        success: false,
        error: "Not allowed. The namespace does not belong to the current project."
      });
    }

    const questions = await AnsweredQuestion.find({ id_project, namespace })
      .sort({ createdAt: -1 })
      .lean();

    const safeFilename = String(namespace).replace(/[^\w.-]+/g, '_') || 'export';

    if (mode === 'json') {
      const questionsJson = questions.map((q) => {
        const { __v, updatedAt, ...doc } = q;
        return doc;
      });
      const payload = {
        namespace,
        exportedAt: new Date().toISOString(),
        count: questionsJson.length,
        questions: questionsJson
      };
      res.setHeader('Content-Type', 'application/json; charset=utf-8');
      res.setHeader('Content-Disposition', `attachment; filename="answered-${safeFilename}.json"`);
      return res.send(JSON.stringify(payload, null, 2));
    }

    res.setHeader('Content-Type', 'text/csv; charset=utf-8');
    res.setHeader('Content-Disposition', `attachment; filename="answered-${safeFilename}.csv"`);

    const csvStream = fastCsv.format({ headers: true });
    csvStream.pipe(res);

    for (const q of questions) {
      csvStream.write({
        id: String(q._id),
        namespace: q.namespace,
        question: q.question,
        answer: q.answer,
        tokens: q.tokens != null ? q.tokens : '',
        request_id: q.request_id || '',
        createdAt: q.createdAt ? new Date(q.createdAt).toISOString() : ''
      });
    }
    csvStream.end();
  } catch (error) {
    winston.error('Error exporting answered questions:', error);
    if (!res.headersSent) {
      res.status(500).json({
        success: false,
        error: "Error exporting answered questions"
      });
    }
  }
});

// Helper function to validate namespace
async function validateNamespace(id_project, namespace_id) {
  try {
    const namespace = await Namespace.findOne({
      id_project: id_project,
      id: namespace_id
    });
    return !!namespace;
  } catch (err) {
    winston.error('validate namespace error: ', err);
    throw err;
  }
}
module.exports = router;