From b34f5b3301db63be8bd5bdb82dab1ba5bd617c3b Mon Sep 17 00:00:00 2001
From: Piotr Dec <piotr_dec@msn.com>
Date: Tue, 16 Jul 2024 21:57:52 +0200
Subject: [PATCH 1/2] feat: TemperaturesController

---
 readme.md                                     |  5 +++++
 .../ztsh/lfr/web/TemperaturesController.java  | 20 +++++++++++++++++++
 2 files changed, 25 insertions(+)
 create mode 100644 src/main/java/eu/ztsh/lfr/web/TemperaturesController.java

diff --git a/readme.md b/readme.md
index 0d417ee..14ca349 100644
--- a/readme.md
+++ b/readme.md
@@ -36,3 +36,8 @@ Write an application that, at the endpoint specified by you, returns the yearly
   }
 ]
 ```
+
+## Usage
+
+Temperature statistics endpoint: `/api/temperatures/{city}`
+Returns HTTP 200 when city is found, 404 otherwise.
diff --git a/src/main/java/eu/ztsh/lfr/web/TemperaturesController.java b/src/main/java/eu/ztsh/lfr/web/TemperaturesController.java
new file mode 100644
index 0000000..fa5cd6b
--- /dev/null
+++ b/src/main/java/eu/ztsh/lfr/web/TemperaturesController.java
@@ -0,0 +1,20 @@
+package eu.ztsh.lfr.web;
+
+import eu.ztsh.lfr.model.Entry;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/temperatures")
+public class TemperaturesController {
+
+    @GetMapping("/{city}")
+    public List<Entry> getTemperatures(@PathVariable String city) {
+        throw new UnsupportedOperationException("Not supported yet.");
+    }
+
+}

From 2f161d34814da4d2e08c56bd3435b03ac104972a Mon Sep 17 00:00:00 2001
From: Piotr Dec <piotr_dec@msn.com>
Date: Tue, 16 Jul 2024 22:22:42 +0200
Subject: [PATCH 2/2] feat: TemperaturesService

---
 .../eu/ztsh/lfr/core/TemperaturesService.java | 13 +++++++++++++
 .../core/impl/TemperaturesServiceImpl.java    | 19 +++++++++++++++++++
 .../ztsh/lfr/web/TemperaturesController.java  | 16 ++++++++++++++--
 3 files changed, 46 insertions(+), 2 deletions(-)
 create mode 100644 src/main/java/eu/ztsh/lfr/core/TemperaturesService.java
 create mode 100644 src/main/java/eu/ztsh/lfr/core/impl/TemperaturesServiceImpl.java

diff --git a/src/main/java/eu/ztsh/lfr/core/TemperaturesService.java b/src/main/java/eu/ztsh/lfr/core/TemperaturesService.java
new file mode 100644
index 0000000..1ee66e3
--- /dev/null
+++ b/src/main/java/eu/ztsh/lfr/core/TemperaturesService.java
@@ -0,0 +1,13 @@
+package eu.ztsh.lfr.core;
+
+import eu.ztsh.lfr.model.Entry;
+import jakarta.annotation.Nonnull;
+
+import java.util.List;
+
+public interface TemperaturesService {
+
+    @Nonnull
+    List<Entry> getTemperaturesFor(String city);
+
+}
diff --git a/src/main/java/eu/ztsh/lfr/core/impl/TemperaturesServiceImpl.java b/src/main/java/eu/ztsh/lfr/core/impl/TemperaturesServiceImpl.java
new file mode 100644
index 0000000..79b2f27
--- /dev/null
+++ b/src/main/java/eu/ztsh/lfr/core/impl/TemperaturesServiceImpl.java
@@ -0,0 +1,19 @@
+package eu.ztsh.lfr.core.impl;
+
+import eu.ztsh.lfr.core.TemperaturesService;
+import eu.ztsh.lfr.model.Entry;
+import jakarta.annotation.Nonnull;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class TemperaturesServiceImpl implements TemperaturesService {
+
+    @Nonnull
+    @Override
+    public List<Entry> getTemperaturesFor(String city) {
+        throw new UnsupportedOperationException("Not supported yet.");
+    }
+
+}
diff --git a/src/main/java/eu/ztsh/lfr/web/TemperaturesController.java b/src/main/java/eu/ztsh/lfr/web/TemperaturesController.java
index fa5cd6b..52a2685 100644
--- a/src/main/java/eu/ztsh/lfr/web/TemperaturesController.java
+++ b/src/main/java/eu/ztsh/lfr/web/TemperaturesController.java
@@ -1,6 +1,9 @@
 package eu.ztsh.lfr.web;
 
+import eu.ztsh.lfr.core.TemperaturesService;
 import eu.ztsh.lfr.model.Entry;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -12,9 +15,18 @@ import java.util.List;
 @RequestMapping("/api/temperatures")
 public class TemperaturesController {
 
+    private final TemperaturesService temperaturesService;
+
+    @Autowired
+    public TemperaturesController(TemperaturesService temperaturesService) {
+        this.temperaturesService = temperaturesService;
+    }
+
     @GetMapping("/{city}")
-    public List<Entry> getTemperatures(@PathVariable String city) {
-        throw new UnsupportedOperationException("Not supported yet.");
+    public ResponseEntity<List<Entry>> getTemperatures(@PathVariable String city) {
+        var data = temperaturesService.getTemperaturesFor(city);
+
+        return data.isEmpty() ? ResponseEntity.notFound().build() : ResponseEntity.ok(data);
     }
 
 }