Parkmanne/Query.cpp

#include "headers/Query.h"

vector<Park_time> query_parktimes_for_customer(int cid) {
    /*
    This is needed to initialize the park_instances for the customer constructor
    that is supposed to create a customer from data in the db.
    This should not be called on on it's own outside query_customer();
     */
    vector<Park_time> park_times;

    SQLite::Statement query(data::db, "SELECT * FROM Park_time WHERE customer_id = ?;");
    query.bind(1, cid);
    while (query.executeStep()) {
        int id = query.getColumn(0);
        int spot_id = query.getColumn(2);
        int start = query.getColumn(3);
        int duration = query.getColumn(5);

        Park_time result{id, cid, spot_id, start, duration};
        park_times.push_back(result);
    }
    query.reset();
    return park_times;
}

//--------------------------------------------- customers

vector<Customer> query_customer_with_name(string name) {
    /*
    We use this instead of plain customers because:
    1. no error handling needed here if there are no customers
    2. multiple customers could be returned with the same name.
     */
    vector<Customer> result;
    SQLite::Statement query(data::db,
                            "SELECT id, name, password, vehicle FROM Customer WHERE name = ?;");
    query.bind(1, name);
    while (query.executeStep()) {
        int id = query.getColumn(0);
        string name_ = query.getColumn(1);
        string password = query.getColumn(2);
        int vehicle = query.getColumn(3); // cast to vehicle
        string telephone = query.getColumn(4);
        vector<Park_time> park_instances = query_parktimes_for_customer(id);
        result.push_back(
            Customer{id, name_, password, Vehicle_type(vehicle), park_instances, telephone});
    }
    return result;
}

Customer query_customer_with_id(int id) {
    /*  do not call this function if you are not certain a customer with this id
    exists.
    // the only legitimate caller of this function is query_parkspot_x
    // there is no error handling in this function
    // for when this function doesn't find the customer with this id !!!!
    */

    SQLite::Statement query(data::db, "SELECT * FROM Customer WHERE id = ?;");
    query.bind(1, id);
    while (query.executeStep()) {
        string name = query.getColumn(1);
        string password = query.getColumn(2);
        int vehicle = query.getColumn(3); // cast to vehicle
        string telephone = query.getColumn(4);
        vector<Park_time> park_instances = query_parktimes_for_customer(id);
        Customer result{id, name, password, Vehicle_type(vehicle), park_instances, telephone};
        return result;
    }
}

int query_role_customer(int id) {
    SQLite::Statement query(data::db, "SELECT * FROM Customer WHERE id = ?;");
    query.bind(1, id);
    while (query.executeStep()) {
        int role = query.getColumn(5);
        return role;
    }
}

//------------------------------- parkspot info

// -- parkspots info, report gen

Park_spot query_parkspot_with_id(int id, vector<Park_spot>& parkspots) {
    for (Park_spot& i : parkspots) {
        if (i.id == id) {
            return i;
        }
    }
}

void reports_from_parkspot(int spotid, pair<int, int> period) {
    vector<Park_time> park_times;
    SQLite::Statement query(data::db,
                            "SELECT * FROM Park_time WHERE spot_id = ? AND start > ? AND end < ?;");
    query.bind(1, spotid);
    query.bind(2, period.first);
    query.bind(3, period.second);
    while (query.executeStep()) {
        int id = query.getColumn(0);
        int cid = query.getColumn(1);
        int start = query.getColumn(3);
        int duration = query.getColumn(5);
        Park_time result{id, cid, spotid, start, duration};
        park_times.push_back(result);
    }
    query.reset();

    for (auto i : park_times) {
        cout << i;
    }
}

void reports_from_allparkspots(pair<int, int> period) {
    vector<Park_time> park_times;
    SQLite::Statement query(data::db, "SELECT * FROM Park_time WHERE start > ? AND end < ?;");
    query.bind(1, period.first);
    query.bind(2, period.second);

    while (query.executeStep()) {
        int id = query.getColumn(0);
        int cid = query.getColumn(1);
        int spotid = query.getColumn(2);
        int start = query.getColumn(3);
        int duration = query.getColumn(5);
        Park_time result{id, cid, spotid, start, duration};
        park_times.push_back(result);
    }
    query.reset();

    for (auto i : park_times) {
        cout << i;
    }
}

void current_status_parkspots(vector<Park_spot>& spots) {
    cout << "P.spot \t\tStatus\t\t Customer\n";
    for (auto& i : spots) {
        cout << "\n" << i.id << "\t\t" << ((i.taken) ? "true" : "false");
        if (i.taken) {
            cout << "\t\t" << i.parked_customer;
        }
    }
    cout << "\n";
}

vector<Park_time> reports_from_customer(int cid, pair<int, int> period) {
    vector<Park_time> park_times;
    int verhicle = int(query_customer_with_id(cid).vehicle);
    float sum = 0;
    SQLite::Statement query(
        data::db, "SELECT * FROM Park_time WHERE customer_id = ? AND start > ? AND end < ?;");
    query.bind(1, cid);
    query.bind(2, period.first);
    query.bind(3, period.second);
    while (query.executeStep()) {
        int id = query.getColumn(0);
        int spotid = query.getColumn(2);
        int start = query.getColumn(3);
        int duration = query.getColumn(5);
        Park_time result{id, cid, spotid, start, duration};
        park_times.push_back(result);
        sum += duration/3600;
    }
    query.reset();

    for (auto i : park_times) {
        cout << std::setprecision(2) << i;
        sum += i.duration / 3600.0;
    }
    cout << "Your fees for this month: $" << std::setprecision(4) << sum * verhicle << "\n";
    return park_times;
}