#include "headers/Customer.h"

// constructors
Customer::Customer(string name_, Verhicle_type verhicle_)
    : name{name_}, verhicle{verhicle_}, card_code{gen_cardcode()} {
    id = auto_increment_db() + 1;
    save_db();
}

Customer::Customer(int id_, string name_, string card_code_,
                   Verhicle_type verhicle_, vector<Park_time> instances)
    : name{name_},
      card_code{card_code_},
      verhicle{verhicle_},
      park_instances{instances} {}

Customer::~Customer() { update_db(); }

// clock in/out methods
// ====================================================================================
/*
Create a p_time object with start=now and adds to vector
 */
void Customer::clock_in(int s_id) {
    Park_time pt{id, s_id};
    park_instances.push_back(pt);
}

// edit last p_time object so end=now
void Customer::clock_out(int s_id) {
    park_instances[park_instances.size() - 1].clock_out(id, s_id);
}

// report gen
void Customer::gen_monthly() {
    cout << "NAME: " << name << " card code: " << card_code << "\n";
    cout << "-------------------------------------------------\n";
    for (auto& i : park_instances) {
        // TODO: need some logic to only include from this month. scratch that,
        // need to remove gen monthly
        cout << i;
    }
    cout << "-------------------------------------------------\n\n";
}

//================================================================================================
// functions that interact with the database

void Customer::save_db() {
    string statement{"insert into Customer values (, '', '', );"};
    // after ( = 28)
    statement.insert(38, to_string(int(verhicle)));
    statement.insert(36, card_code);
    statement.insert(32, name);
    statement.insert(29, to_string(id));
    SQLite::Transaction transaction(data::db);
    data::db.exec(statement);
    transaction.commit();
}

void Customer::update_db() {
    string statement =
        "UPDATE Customer SET name = '', card_code = '' where id = '';";
    statement.insert(58, to_string(id));
    statement.insert(44, card_code);
    statement.insert(28, name);
    data::db.exec(statement);
}

void Customer::delete_db() {
    string statement = "delete from Customer where id= ;";
    statement.insert(statement.length() - 2, to_string(id));
    SQLite::Transaction transaction(data::db);
    data::db.exec(statement);
    transaction.commit();
}

int Customer::auto_increment_db() {
    SQLite::Statement max_id(data::db, "select max(id) from Customer;");
    int id = 0;
    max_id.executeStep();
    id = max_id.getColumn(0);
    max_id.reset();
    return id;
}

// random helpers=============================================================
std::mt19937 mt(time(0));
std::uniform_int_distribution<int> dist(65, 127);

string Customer::gen_cardcode() {
    string code;
    for (int i = 0; i < 20; i++) {
        char letter = char(dist(mt));
        code += letter;
    }
    return code;
}