From 2691ded81905cc41e264fcdc4c41ddffa793870a Mon Sep 17 00:00:00 2001
From: acty <acty@local>
Date: Tue, 3 Feb 2026 18:01:23 +0900
Subject: [PATCH] feat(01-01): initialize Go project with HTTP server

- Go module initialized with github.com/acty/pirate-station
- HTTP server on port 32768 with root and health endpoints
- Health check verifies /data volume mount
- No external dependencies, stdlib only
---
 cmd/server/main.go         | 27 +++++++++++++++++++++++++++
 go.mod                     |  3 +++
 internal/health/handler.go | 28 ++++++++++++++++++++++++++++
 3 files changed, 58 insertions(+)
 create mode 100644 cmd/server/main.go
 create mode 100644 go.mod
 create mode 100644 internal/health/handler.go

diff --git a/cmd/server/main.go b/cmd/server/main.go
new file mode 100644
index 0000000..0cc7d88
--- /dev/null
+++ b/cmd/server/main.go
@@ -0,0 +1,27 @@
+package main
+
+import (
+	"log"
+	"net/http"
+
+	"github.com/acty/pirate-station/internal/health"
+)
+
+func main() {
+	// Root endpoint
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+		w.Write([]byte("Pirate Station API"))
+	})
+
+	// Health check endpoint
+	http.HandleFunc("/health", health.Handler)
+
+	// Start server on port 32768
+	port := ":32768"
+	log.Printf("Starting Pirate Station server on port %s", port)
+
+	if err := http.ListenAndServe(port, nil); err != nil {
+		log.Fatal(err)
+	}
+}
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..baf0e09
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module github.com/acty/pirate-station
+
+go 1.19
diff --git a/internal/health/handler.go b/internal/health/handler.go
new file mode 100644
index 0000000..6e6427c
--- /dev/null
+++ b/internal/health/handler.go
@@ -0,0 +1,28 @@
+package health
+
+import (
+	"encoding/json"
+	"net/http"
+	"os"
+)
+
+// Handler provides a health check endpoint that verifies the data volume is mounted
+func Handler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+
+	// Check if /data directory exists
+	if _, err := os.Stat("/data"); os.IsNotExist(err) {
+		w.WriteHeader(http.StatusServiceUnavailable)
+		json.NewEncoder(w).Encode(map[string]string{
+			"status": "unhealthy",
+			"reason": "data volume not mounted",
+		})
+		return
+	}
+
+	// All checks passed
+	w.WriteHeader(http.StatusOK)
+	json.NewEncoder(w).Encode(map[string]string{
+		"status": "healthy",
+	})
+}