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outputwindow.cpp
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outputwindow.cpp
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#include "outputwindow.h"
#include "ui_outputwindow.h"
#include "mainwindow.h"
#include "ScheduleMaker.h"
#include "json.h"
#include "curlUtils.h"
#include "playlist.h"
#include <iostream>
#include <fstream>
#include <string>
#include <utility>
#include <algorithm>
using json = nlohmann::json;
using namespace std;
using namespace std::chrono;
using namespace std;
vector<tuple<string, int, int>> outputSchedule;
vector<vector<Playlist>> outputSongs;
string coffeeRec;
string startTimeIn;
string genre;
//*************************************************************************************************
string formatDuration(int durationSeconds) {
int minutes = durationSeconds / 60;
int seconds = durationSeconds % 60;
return to_string(minutes) + ":" + (seconds < 10 ? "0" : "") + to_string(seconds);
}
// Jingyi Fu implemented the merge sort and quick sort algorithms, and compared these two sorts according to time difference.
void merge(vector<pair<string, int>>& songs, int left, int middle, int right) {
int n1 = middle - left + 1;
int n2 = right - middle;
vector<pair<string, int>> L(n1), R(n2);
// Copy data to temp arrays L[] and R[]
for (int i = 0; i < n1; i++)
L[i] = songs[left + i];
for (int j = 0; j < n2; j++)
R[j] = songs[middle + 1 + j];
// Merge the temp arrays back into songs
int i = 0, j = 0, k = left;
while (i < n1 && j < n2) {
if (L[i].second >= R[j].second) {
songs[k] = L[i];
i++;
} else {
songs[k] = R[j];
j++;
}
k++;
}
// Copy the remaining elements of L[]
while (i < n1) {
songs[k] = L[i];
i++;
k++;
}
// Copy the remaining elements of R[]
while (j < n2) {
songs[k] = R[j];
j++;
k++;
}
}
void mergeSort(vector<pair<string, int>>& songs, int left, int right) {
if (left < right) {
int middle = left + (right - left) / 2;
mergeSort(songs, left, middle);
mergeSort(songs, middle + 1, right);
merge(songs, left, middle, right);
}
}
// quick sort
int partition(vector<pair<string, int>>& songs, int low, int high){
auto pivot = songs[high].second;
int i = (low -1);
for (int j = low; j<= high -1; j++){
// if the song's duration is smaller than or equal to the pivot
if (songs[j].second >= pivot){
i++;
swap(songs[i], songs[j]);
}
}
swap(songs[i+1], songs[high]);
return (i+1);
}
void quickSort(vector<pair<string, int>>& songs, int low, int high){
if (low < high){
int pi = partition(songs, low, high);
quickSort(songs, low, pi-1);
quickSort(songs, pi+1, high);
}
}
// compare merge sorts and quick sorts in milleseconds
void compareSorts(vector<pair<string, int>>& songs){
vector<pair<string, int>> songsForMergeSort = songs;
vector<pair<string, int>> songsForQuickSort = songs;
// quick sort
auto start = high_resolution_clock::now();
quickSort(songs, 0, songsForQuickSort.size() - 1);
auto stop = high_resolution_clock::now();
auto durationQuickSort = duration_cast<microseconds>(stop - start);
// merge sort
start = high_resolution_clock::now();
mergeSort(songs, 0, songsForMergeSort.size() - 1);
stop = high_resolution_clock::now();
auto durationMergeSort = duration_cast<microseconds>(stop - start);
// Outputting the comparison results
cout << "Quick Sort took: " << durationQuickSort.count() << " microseconds" << endl;
cout << "Merge Sort took: " << durationMergeSort.count() << " microseconds" << endl;
}
// return a string of artists' IDs by an inputted genre
vector<string> searchArtistsByGenre(const string& genre, const string& token){
vector<string> artists_ID;
/*
code adapted from the Spotify API for Developers
https://developer.spotify.com/documentation/web-api/tutorials/code-flow
*/
string query = "genre:%22jazz%22";
string endpoint = "/v1/search";
map<string, string> options = {
{"q", query},
{"type", "artist"},
{"limit", "20"} // Adjust
};
options["Authorization"] = "Bearer " + token;
// make the GET request to spotify
json response;
try {
response = SpotifyGET(endpoint, options, token);
} catch (const exception& e) {
cerr << "Failed to search artists by genre: " << e.what() << endl;
return artists_ID; // Return empty list on failure
}
// Parse the response and extract artist IDs
if (response.contains("artists") && response["artists"]["items"].is_array()) {
for (const auto& item : response["artists"]["items"]) {
if (item.contains("id") && item["id"].is_string()) {
artists_ID.push_back(item["id"].get<string>());
}
}
}
return artists_ID;
}
// return a pair of vectors, which contains string song, and int duration in milliseconds
vector<pair<string, int>> getArtistsTopTracks(const string& artistsID, const string& token){
vector<pair<string, int>> topTracks;
// The endpoint to get an artist's top tracks. We assume "market=US";
string endpoint = "/v1/artists/" + artistsID + "/top-tracks?market=US";
// make the GET request to Spotify
json response = SpotifyGET(endpoint, {}, token);
// parse the response and return the vector pair of tracks
if (response.contains("tracks") && response["tracks"].is_array()) {
for (const auto& track : response["tracks"]) {
string name = track.value("name", "");
int duration_ms = track.value("duration_ms", 0);
topTracks.emplace_back(name, duration_ms);
}
}
return topTracks;
};
/*
clientId = "d5c3d2aa60854adf85215434d7d9afe3"
clientSecret = "f4ec1b86020a48139856ff3e776adcfc"
The above data are from the Spotify for Developers. The ID and the Secret are both unique, and only applicable for this project.
*/
string refreshToken() {
string clientId = "d5c3d2aa60854adf85215434d7d9afe3";
string clientSecret = "f4ec1b86020a48139856ff3e776adcfc";
string command = "curl -X POST \"https://accounts.spotify.com/api/token\" -H \"Content-Type: application/x-www-form-urlencoded\" -d \"grant_type=client_credentials&client_id=" + clientId + "&client_secret=" + clientSecret + "\"";
FILE* pipe = popen(command.c_str(), "r");
if (!pipe) {
cerr << "Error executing curl command" << endl;
return "";
}
stringstream buffer;
char temp[128];
while (!feof(pipe)) {
if (fgets(temp, 128, pipe) != NULL)
buffer << temp;
}
pclose(pipe);
json response = json::parse(buffer.str());
if (response.contains("access_token") && response["access_token"].is_string()) {
return response["access_token"].get<string>();
} else {
cerr << "Error parsing token from response" << endl;
return "";
}
}
//*************************************************************************************************
outputWindow::outputWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::outputWindow)
{
ui->setupUi(this);
}
outputWindow::~outputWindow()
{
delete ui;
}
void outputWindow::getOutput(ScheduleMaker& s, string t, string g)
{
outputSchedule = s.getSchedule();
startTimeIn = t;
genre = g;
}
string outputWindow::getCoffeeRec()
{
srand(time(0));
int random = 2 + (arc4random() % 989);
//read in csv file
//cout << std::file_system::current_path() << endl;
std::ifstream file("/Users/angelali/Testing/coffeeDatabase.csv"); //CHANGE FILE LOCATION
if (!file.is_open()) {
cout << "file didn't open" << endl;
}
std::string line;
for(int i = 0; i < random; i++){
std::getline(file, line);
}
string country = line.substr(0, line.find_first_of(','));
string rest = line.substr(line.find_first_of(',') + 1);
string region = rest.substr(0, rest.find_first_of(','));
string returnString = "From " + region.substr(1, region.size() - 2) + " in " + country.substr(1, country.size() - 2);
return returnString;
file.close();
}
void outputWindow::setOutput()
{
string token = refreshToken();
vector<string> artistIds = searchArtistsByGenre(genre, token);
// get top tracks for each artist
vector<pair<string, int>> songs; // Song name and duration
for (const auto& artistId : artistIds) {
auto artistSongs = getArtistsTopTracks(artistId, token);
for (const auto& artistSong : artistSongs) {
bool found = false;
for (const auto& song : songs) {
if (song.first == artistSong.first && song.second == artistSong.second) {
found = true;
break;
}
}
// If the song is not found in the list, add it
if (!found) {
songs.push_back(artistSong);
}
}
}
compareSorts(songs);
quickSort(songs, 0, songs.size()-1);
outputSongs = PlaylistGenerator::createPlaylists(songs, outputSchedule);
string prevEndTime = startTimeIn;
for (int i = 0; i < outputSchedule.size(); i++) {
string name = get<0>(outputSchedule[i]);
int minutes = get<1>(outputSchedule[i]);
int breakTime = get<2>(outputSchedule[i]);
string startTime = prevEndTime;
prevEndTime = getEndTime(startTime, minutes);
ui->studyOutputBox->addItem(QString::fromStdString(startTime + ": " + name));
startTime = prevEndTime;
prevEndTime = getEndTime(startTime, breakTime);
ui->studyOutputBox->addItem(QString::fromStdString(startTime + ": Break!"));
ui->songListBox->addItem(QString::fromStdString("*******************************************"));
ui->songListBox->addItem(QString::fromStdString(get<0>(outputSchedule[i]) + " for " + to_string(get<1>(outputSchedule[i])) + " minutes"));
for (int x = 0; x < outputSongs[i].size(); x++){
ui->songListBox->addItem(QString::fromStdString(outputSongs[i][x].songName + "\t" + formatDuration((outputSongs[i][x].duration))));
}
}
//output coffee rec
coffeeRec = getCoffeeRec();
ui->coffeeRecLabel->setText(QString::fromStdString(coffeeRec));
}
void outputWindow::on_againButton_clicked()
{
this->hide();
outputSchedule.clear();
outputSongs.clear();
MainWindow *w = new MainWindow();
w->show();
}