98 lines
3.3 KiB
C++
98 lines
3.3 KiB
C++
#include "headers/Query.h"
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vector<Park_time> query_parktimes_for_customer(int cid) {
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/*
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This is needed to initialize the park_instances for the customer constructor
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that is supposed to create a customer from data in the db.
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This should not be called on on it's own outside query_customer();
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*/
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vector<Park_time> park_times;
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SQLite::Statement query(data::db,
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"SELECT * FROM Park_time WHERE customer_id = ?;");
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query.bind(1, cid);
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while (query.executeStep()) {
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int id = query.getColumn(0);
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int spot_id = query.getColumn(2);
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int start = query.getColumn(3);
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int duration = query.getColumn(5);
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Park_time result{id, cid, spot_id, start, duration};
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park_times.push_back(result);
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}
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query.reset();
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return park_times;
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}
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vector<Customer> query_customer_with_name(string name) {
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/*
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We use this instead of plain customers because:
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1. no error handling needed here if there are no customers
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2. multiple customers could be returned with the same name.
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*/
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vector<Customer> result;
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SQLite::Statement query(
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data::db,
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"SELECT id, name, password, verhicle FROM Customer WHERE name = ?;");
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query.bind(1, name);
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while (query.executeStep()) {
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int id = query.getColumn(0);
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string name_ = query.getColumn(1);
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string password = query.getColumn(2);
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int verhicle = query.getColumn(3); // cast to verhicle
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vector<Park_time> park_instances = query_parktimes_for_customer(id);
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result.push_back(Customer{
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id, name_, password, Verhicle_type(verhicle), park_instances});
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}
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return result;
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}
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Customer query_customer_with_id(int id) {
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/* do not call this function if you are not certain a customer with this id
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exists.
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// the only legitimate caller of this function is query_parkspot_x
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// there is no error handling in this function
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// for when this function doesn't find the customer with this id !!!!
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*/
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SQLite::Statement query(data::db, "SELECT * FROM Customer WHERE id = ?;");
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query.bind(1, id);
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while (query.executeStep()) {
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string name = query.getColumn(1);
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string password = query.getColumn(2);
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int verhicle = query.getColumn(3); // cast to verhicle
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vector<Park_time> park_instances = query_parktimes_for_customer(id);
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Customer result{
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id, name, password, Verhicle_type(verhicle), park_instances};
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// DEBUG
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cout << "{" << result.id << "," <<result.password <<"," << int(verhicle) << "}\n";
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return result;
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}
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}
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void query_all_parking_spots() {
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SQLite::Statement query(data::db, "SELECT * FROM Park_spot WHERE id > ?;");
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query.bind(1, 0);
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while (query.executeStep()) {
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int id = query.getColumn(0);
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int taken = query.getColumn(1);
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int cid = query.getColumn(2);
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park_customers.push_back(query_customer_with_id(cid));
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parking_spots.push_back(
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Park_spot{get_customer_ptr_for_parkspot(cid), id, bool(taken)});
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}
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}
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Customer* get_customer_ptr_for_parkspot(int id) {
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if (!id) {
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return nullptr;
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}
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for (int i = 0; i < park_customers.size(); i++) {
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if (park_customers[i].id == id) {
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return &park_customers[i];
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}
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}
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return nullptr;
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} |