const { exec } = require('child_process');
exec('npm list axios', (err, stdout, stderr) => {
    if (stderr.includes('empty')) {
        console.log('Installing axios...');
        exec('npm install axios', (error, stdout, stderr) => {
            if (error) {
                console.error('Error installing axios:', error);
            } else {
                console.log('Axios installed successfully');
                startApp();
            }
        });
    } else {
        startApp();
    }
});

function startApp() {
    const express = require('express');
    const axios = require('axios');
    const FormData = require('form-data');
    const plantsRouter = express.Router();
    const cors = require('cors');
    const CONFIG = require('./config');

    plantsRouter.use(cors());

    async function getAccessToken() {
        const formData = new FormData();
        formData.append('grant_type', 'client_credentials');
        formData.append('client_id', CONFIG.CLIENT_ID);
        formData.append('client_secret', CONFIG.CLIENT_SECRET);

        try {
            const response = await axios.post('https://open.plantbook.io/api/v1/token/', formData, {
                headers: {'Content-Type': 'multipart/form-data'}
            });
            if (response.data && response.data.access_token) {
                console.log('Access token retrieved:', response.data.access_token);
                return response.data.access_token;
            } else {
                console.error('Error: access_token not found in response');
                return null;
            }

        } catch (error) {
            console.error('Error fetching access token:', error.response ? error.response.data : error.message);
            return null;
        }
    }

    async function fetchPlantData(plantId) {
        const accessToken = await getAccessToken();
        if (!accessToken) {
            return null;
        }
        try {
            const response = await axios.get(`https://open.plantbook.io/api/v1/plant/detail/${encodeURIComponent(plantId)}/`, {
                headers: {
                    'Authorization': `Bearer ${accessToken}`
                }
            });
            return response.data;
        } catch (error) {
            console.error('Error fetching plant data:', error.response ? error.response.data : error.message);
            return null;
        }
    }

    plantsRouter.get('/list', async (req, res) => {
        const accessToken = await getAccessToken();
        if (!accessToken) {
            res.status(500).send({message: 'Error obtaining access token'});
            return;
        }
        try {
            const alias = req.query.alias || 'monstera';
            const response = await axios.get('https://open.plantbook.io/api/v1/plant/search', {
                headers: {
                    'Authorization': `Bearer ${accessToken}`
                },
                params: {
                    alias: alias
                }
            });

            const plantsList = response.data.results;

            const plants = await Promise.all(plantsList.map(async (plant) => {
                const plantDetails = await fetchPlantData(plant.pid);
                return {
                    id: plant.pid,
                    alias: plant.alias,
                    display_name: plant.display_name,
                    image_url: plantDetails ? plantDetails.image_url : null,
                    max_light: plantDetails ? plantDetails.max_light : null,
                    min_light: plantDetails ? plantDetails.min_light : null,
                    max_temp: plantDetails ? plantDetails.max_temp : null,
                    min_temp: plantDetails ? plantDetails.min_temp : null,
                    max_env_humid: plantDetails ? plantDetails.max_env_humid : null,
                    min_env_humid: plantDetails ? plantDetails.min_env_humid : null,
                    max_soil_moist: plantDetails ? plantDetails.max_soil_moist : null,
                    min_soil_moist: plantDetails ? plantDetails.min_soil_moist : null,
                    max_soil_ec: plantDetails ? plantDetails.max_soil_ec : null,
                    min_soil_ec: plantDetails ? plantDetails.min_soil_ec : null,
                };
            }));

            res.send({results: plants});
        } catch (error) {
            console.error('Error fetching plant list:', error.response ? error.response.data : error.message);
            res.status(500).send({message: 'Error fetching plant list'});
        }
    });

    plantsRouter.get('/:id', async (req, res) => {
        const plantId = req.params.id;
        const plantData = await fetchPlantData(plantId);

        if (plantData) {
            const detailedPlantData = {
                id: plantData.pid,
                display_name: plantData.display_name,
                alias: plantData.alias,
                max_light: plantData.max_light,
                min_light: plantData.min_light,
                max_temperature: plantData.max_temp,
                min_temperature: plantData.min_temp,
                max_humidity: plantData.max_env_humid,
                min_humidity: plantData.min_env_humid,
                max_soil_moisture: plantData.max_soil_moist,
                min_soil_moisture: plantData.min_soil_moist,
                max_soil_ec: plantData.max_soil_ec,
                min_soil_ec: plantData.min_soil_ec,
                image_url: plantData.image_url
            };

            res.send(detailedPlantData);
        } else {
            res.status(404).send({message: 'Plant not found'});
        }
    });

    module.exports = plantsRouter;
}