feat: show admin UI warning for SQLite on networked filesystem (#1713)

Co-authored-by: Elias Schneider <login@eliasschneider.com>

backend/internal/environment/handler.go

@@ -0,0 +1,70 @@
+package environment
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/gin-gonic/gin"
+
+	"github.com/pocket-id/pocket-id/backend/internal/common"
+	_ "github.com/pocket-id/pocket-id/backend/internal/dto"
+	"github.com/pocket-id/pocket-id/backend/internal/utils"
+)
+
+type handler struct {
+	service *Service
+}
+
+func newHandler(service *Service) *handler {
+	return &handler{service: service}
+}
+
+// getLatestVersion godoc
+// @Summary Get latest available version of Pocket ID
+// @Tags Version
+// @Produce json
+// @Success 200 {object} map[string]string "Latest version information"
+// @Failure default {object} dto.ErrorDto "Error"
+// @Router /api/version/latest [get]
+func (h *handler) getLatestVersion(c *gin.Context) error {
+	tag, err := h.service.GetLatestVersion(c.Request.Context())
+	if err != nil {
+		return err
+	}
+
+	utils.SetCacheControlHeader(c, 5*time.Minute, 15*time.Minute)
+
+	c.JSON(http.StatusOK, gin.H{
+		"latestVersion": tag,
+	})
+	return nil
+}
+
+// getCurrentVersion godoc
+// @Summary Get current deployed version of Pocket ID
+// @Tags Version
+// @Produce json
+// @Success 200 {object} map[string]string "Current version information"
+// @Failure default {object} dto.ErrorDto "Error"
+// @Router /api/version/current [get]
+func (h *handler) getCurrentVersion(c *gin.Context) error {
+	c.JSON(http.StatusOK, gin.H{
+		"currentVersion": common.Version,
+	})
+	return nil
+}
+
+// getSqliteStorageWarning godoc
+// @Summary Get whether the SQLite storage warning should be shown
+// @Description Reports whether Pocket ID found its SQLite database on a networked filesystem, which is unsupported and can lead to database corruption
+// @Tags Storage
+// @Produce json
+// @Success 200 {object} map[string]bool "SQLite storage warning state"
+// @Failure default {object} dto.ErrorDto "Error"
+// @Router /api/storage/sqlite-warning [get]
+func (h *handler) getSqliteStorageWarning(c *gin.Context) error {
+	c.JSON(http.StatusOK, gin.H{
+		"showWarning": h.service.ShowSQLiteStorageWarning(),
+	})
+	return nil
+}