From bea3567a2282a04a0a0f5286b4ae55e178afa22a Mon Sep 17 00:00:00 2001
From: Tony Cao <tonykcao@gmail.com>
Date: Fri, 4 Oct 2024 15:27:57 -0400
Subject: [PATCH] feat: added anytime to date module

---
 include/faker-cxx/date.h    | 13 +++++++++++++
 src/modules/date.cpp        | 13 ++++++++++++-
 tests/modules/date_test.cpp | 30 ++++++++++++++++++++++++++++++
 3 files changed, 55 insertions(+), 1 deletion(-)

diff --git a/include/faker-cxx/date.h b/include/faker-cxx/date.h
index f8eec56bc..250c21e9a 100644
--- a/include/faker-cxx/date.h
+++ b/include/faker-cxx/date.h
@@ -13,6 +13,19 @@ enum class DateFormat
     Timestamp,
 };
 
+/**
+ * @brief Generates a random date in +- 100 years from current date
+ *
+ * @returns ISO formatted string.
+ *
+ * @code
+ * faker::date::anytime() // "2023-12-08T19:31:32Z"
+ * faker::date::anytime(DateFormat::ISO) // "2020-06-16T15:24:09Z"
+ * faker::date::anytime(DateFormat::Timestamp) // "1592321049"
+ * @endcode
+ */
+FAKER_CXX_EXPORT std::string anytime(DateFormat dateFormat = DateFormat::ISO);
+
 /**
  * @brief Generates a random date in the past.
  *
diff --git a/src/modules/date.cpp b/src/modules/date.cpp
index d2ddcba98..593a57a9a 100644
--- a/src/modules/date.cpp
+++ b/src/modules/date.cpp
@@ -11,7 +11,7 @@
 #include "date_data.h"
 #include "faker-cxx/helper.h"
 #include "faker-cxx/number.h"
-
+#include <iostream>
 namespace faker::date
 {
 std::string serializeTimePoint(const auto& timePoint, DateFormat dateFormat)
@@ -46,6 +46,17 @@ std::string betweenDate(const auto& from, const auto& to, DateFormat dateFormat)
 const auto numberOfHoursInDay = 24;
 const auto numberOfDaysInYear = 365;
 
+std::string anytime(DateFormat dateFormat)
+{
+    const auto startDate =
+        std::chrono::system_clock::now() - std::chrono::hours{numberOfHoursInDay * numberOfDaysInYear * 100};
+
+    const auto endDate =
+        std::chrono::system_clock::now() + std::chrono::hours{numberOfHoursInDay * numberOfDaysInYear * 100};
+
+    return betweenDate(startDate, endDate, dateFormat);
+}
+
 std::string futureDate(int years, DateFormat dateFormat)
 {
     const auto startDate = std::chrono::system_clock::now() + std::chrono::hours{1};
diff --git a/tests/modules/date_test.cpp b/tests/modules/date_test.cpp
index 7ae2b4e26..a966cadbb 100644
--- a/tests/modules/date_test.cpp
+++ b/tests/modules/date_test.cpp
@@ -127,6 +127,36 @@ TEST_F(DateTest, shouldGenerateFutureDateTimestamp)
     EXPECT_TRUE(futureDate > currentDate);
 }
 
+TEST_F(DateTest, shouldGenerateAnytimeISO)
+{
+    const auto currentDate = std::chrono::system_clock::now();
+
+    const auto anytimeISO = anytime();
+
+    const auto generatedDate = parseISOFormattedStringToTimePoint(anytimeISO);
+
+    const auto durationInYears = std::abs(
+        std::chrono::duration_cast<std::chrono::years>(currentDate - generatedDate).count()
+    );
+
+    EXPECT_TRUE(durationInYears < 101);
+}
+
+TEST_F(DateTest, shouldGenerateAnytimeTimestamp)
+{
+    const auto currentDate = std::chrono::system_clock::now();
+
+    const auto anytimeTimestamp = anytime(DateFormat::Timestamp);
+
+    const auto generatedDate = std::chrono::system_clock::from_time_t(std::stoi(anytimeTimestamp));
+
+    const auto durationInYears = std::abs(
+        std::chrono::duration_cast<std::chrono::years>(currentDate - generatedDate).count()
+    );
+
+    EXPECT_TRUE(durationInYears < 101);
+}
+
 TEST_F(DateTest, shouldGenerateSoonDateISO)
 {
     const auto currentDate = std::chrono::system_clock::now();