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const https = require('https')
const imgSearchCollection = 'imgSearches'
// Challenge 4 - Image Search Abstraction Layer (search)
exports.query = function (req, res) {
const resultsPerQuery = 10
var localData = {
searchTerm: '',
pagination: 1,
}
if (!req.params.q) {
res.json({'error': 'search query required'})
} else {
if (req.query.offset) {
var offset_tmp = Number(req.query.offset)
if (!isNaN(offset_tmp)) {
localData.pagination = offset_tmp
}
}
localData.searchTerm = req.params.q
var options = {
host: 'www.googleapis.com',
port: 443,
path: '/customsearch/v1?',
method: 'GET',
headers: {
'Content-Type': 'application/json'
}
}
options.path += 'searchType=image'
options.path += '&safe=medium'
options.path += '&fields=kind,items(title,link,snippet,image/contextLink,image/thumbnailLink)'
options.path += '&key=' + process.env.G_SEARCH_API_KEY
options.path += '&cx=' + process.env.G_CSE_ID
options.path += '&q=' + localData.searchTerm
options.path += '&start=' + Math.max(localData.pagination * resultsPerQuery, 1)
const imgReq = https.request(options, function(imgRes) {
var output = ''
imgRes.setEncoding('utf8')
imgRes.on('data', function (chunk) {
output += chunk
})
imgRes.on('end', function () {
localData.imgJSON = JSON.parse(output)
var collection = req.app.dbConn.getDB().collection(imgSearchCollection)
var lastDoc = collection.find().sort({ index: -1 }).limit(1)
lastDoc.project({_id: 0, index: 1}).toArray(function (err, documents) {
if (err) console.error(err)
var insertIndex = 1
if (documents.length > 0) {
insertIndex += documents[0].index
}
collection.insertOne({
index: insertIndex,
query: localData.searchTerm
}, function(err, r) {
if (err) console.error(err)
res.json(localData)
})
})
})
})
imgReq.on('error', function (err) {
res.send('error: ' + err.message)
})
imgReq.end()
}
}
// Challenge 4 - Image Search Abstraction Layer (recent searches)
exports.latest = function (req, res) {
var collection = req.app.dbConn.getDB().collection(imgSearchCollection)
var lastSearches = collection.find().sort({ index: -1 }).limit(10)
lastSearches.project({ _id: 0, query: 1 }).toArray(function (err, documents) {
if (err) console.error(err.message)
res.json(documents)
})
}
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