feat: implement sync log and stats handlers

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

internal/handler/log.go

@@ -0,0 +1,61 @@
+package handler
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/gin-gonic/gin"
+	"gitm/internal/database"
+)
+
+func HandleGetSyncLogs(c *gin.Context) {
+	serverIDStr := c.Query("server_id")
+	pageStr := c.DefaultQuery("page", "1")
+	limitStr := c.DefaultQuery("limit", "50")
+	page, _ := strconv.Atoi(pageStr)
+	limit, _ := strconv.Atoi(limitStr)
+	if limit > 100 {
+		limit = 100
+	}
+	var serverID int64
+	if serverIDStr != "" {
+		serverID, _ = strconv.ParseInt(serverIDStr, 10, 64)
+	}
+	offset := (page - 1) * limit
+	logs, err := database.GetSyncLogs(serverID, limit, offset)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"data": logs, "page": page, "limit": limit, "count": len(logs)})
+}
+
+func HandleGetStats(c *gin.Context) {
+	servers, err := database.GetServers()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	serverCount := len(servers)
+	repoCount := 0
+	totalSize := int64(0)
+	activeServers := 0
+	for _, server := range servers {
+		if server.Status == "active" {
+			activeServers++
+		}
+		repos, err := database.GetReposByServer(server.ID)
+		if err == nil {
+			repoCount += len(repos)
+			for _, repo := range repos {
+				totalSize += repo.Size
+			}
+		}
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"server_count":   serverCount,
+		"active_servers": activeServers,
+		"repo_count":     repoCount,
+		"total_size":     totalSize,
+	})
+}