feat(week_1): preview_program

1 files changed, 88 insertions, 0 deletions

diff --git a/week_1/review_program/textbook.cc b/week_1/review_program/textbook.cc
new file mode 100644
index 0000000..6eeee7c
--- /dev/null
+++ b/week_1/review_program/textbook.cc
@@ -0,0 +1,88 @@
+#include "textbook.hh"
+
+#include <iomanip>
+#include <iostream>
+
+namespace textbook {
+auto Textbook::code() const -> uint64_t { return this->_code; }
+auto Textbook::single_copy_price() const -> double {
+  return this->_single_copy_price;
+}
+auto Textbook::number_on_hand() const -> uint64_t {
+  return this->_number_on_hand;
+}
+auto Textbook::prospective_enrollment() const -> uint64_t {
+  return this->_prospective_enrollment;
+}
+auto Textbook::required() const -> bool { return this->_required; }
+auto Textbook::used() const -> bool { return this->_used; }
+auto Textbook::amount_to_order() const -> uint64_t {
+  return this->_amount_to_order;
+}
+auto Textbook::total_cost() const -> double { return this->_total_cost; }
+
+auto Textbook::set_code(uint64_t code) -> void { this->_code = code; }
+auto Textbook::set_single_copy_price(double single_copy_price) -> void {
+  this->_single_copy_price = single_copy_price;
+}
+auto Textbook::set_number_on_hand(uint64_t number_on_hand) -> void {
+  this->_number_on_hand = number_on_hand;
+}
+auto Textbook::set_prospective_enrollment(uint64_t prospective_enrollment)
+    -> void {
+  this->_prospective_enrollment = prospective_enrollment;
+}
+auto Textbook::set_required(bool required) -> void {
+  this->_required = required;
+}
+auto Textbook::set_used(bool used) -> void { this->_used = used; }
+
+auto Textbook::print() const -> void {
+  // Pretty print all values, minus evaluated values
+  std::cout << "Book: " << this->_code << "\nPrice: $"
+            << this->_single_copy_price
+            << "\nInventory: " << this->_number_on_hand
+            << "\nEnrollment: " << this->_prospective_enrollment
+            << "\nRequired: " << this->_required << "\nUsed: " << this->_used
+            << std::endl;
+}
+
+auto Textbook::evaluate_needs() -> void {
+  /// Calculate the total cost of the books to order based on an input factor
+  const auto set_amount_to_order = [this](double factor) -> void {
+    this->_amount_to_order =
+        static_cast<uint64_t>(
+            static_cast<double>(this->_prospective_enrollment) * factor) -
+        this->_number_on_hand;
+  };
+
+  // Determine amount to order based on given percentages
+  if (this->_required && !this->_used) {
+    set_amount_to_order(0.9);
+  } else if (this->_required && this->_used) {
+    set_amount_to_order(0.65);
+  } else if (!this->_required && !this->_used) {
+    set_amount_to_order(0.4);
+  } else if (!this->_required && this->_used) {
+    set_amount_to_order(0.2);
+  }
+
+  // Calculate total cost
+  this->_total_cost =
+      static_cast<double>(this->_amount_to_order) * this->_single_copy_price;
+}
+
+auto Textbook::print_needs() const -> void {
+  // Pretty print the amount to order and total cost
+  std::cout << "Need to order: " << this->_amount_to_order << "\nTotal cost: $"
+            << std::fixed << std::setprecision(2) << this->_total_cost
+            << std::endl;
+}
+
+auto Textbook::operator==(const Textbook &other) const -> bool {
+  return this->_code == other._code;
+}
+auto Textbook::operator!=(const Textbook &other) const -> bool {
+  return this->_code != other._code;
+}
+} // namespace textbook