init

internal/http/admin_common.go

@@ -0,0 +1,135 @@
+package httpserver
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/go-chi/chi/v5"
+
+	authservice "update_server/internal/auth"
+	"update_server/internal/db"
+	"update_server/internal/slug"
+)
+
+func (h *handler) basePageData(r *http.Request, title, eyebrow, heading, description string) PageData {
+	return PageData{
+		Title:       title,
+		Eyebrow:     eyebrow,
+		Heading:     heading,
+		Description: description,
+		BaseURL:     strings.TrimRight(h.config.BaseURL, "/"),
+		CSRFToken:   h.csrfToken(r),
+		CurrentUser: h.currentUser(r),
+	}
+}
+
+func (h *handler) currentUser(r *http.Request) *db.User {
+	sessionState, ok := authservice.FromContext(r.Context())
+	if !ok {
+		return nil
+	}
+
+	user := sessionState.User
+	return &user
+}
+
+func (h *handler) currentUserID(r *http.Request) *int64 {
+	user := h.currentUser(r)
+	if user == nil {
+		return nil
+	}
+
+	return &user.ID
+}
+
+func routeID(r *http.Request, key string) (int64, error) {
+	raw := strings.TrimSpace(chi.URLParam(r, key))
+	if raw == "" {
+		return 0, fmt.Errorf("%s is required", key)
+	}
+
+	value, err := strconv.ParseInt(raw, 10, 64)
+	if err != nil || value <= 0 {
+		return 0, fmt.Errorf("invalid %s", key)
+	}
+
+	return value, nil
+}
+
+func projectFormInput(name, slugValue, description string) (db.CreateProjectParams, string) {
+	name = strings.TrimSpace(name)
+	slugValue = slug.Make(firstNonEmpty(slugValue, name))
+	description = strings.TrimSpace(description)
+
+	switch {
+	case name == "":
+		return db.CreateProjectParams{}, "Project name is required."
+	case slugValue == "":
+		return db.CreateProjectParams{}, "Project slug is required."
+	default:
+		return db.CreateProjectParams{
+			Name:        name,
+			Slug:        slugValue,
+			Description: description,
+		}, ""
+	}
+}
+
+func tagFormInput(name, slugValue, description string) (db.CreateTagParams, string) {
+	name = strings.TrimSpace(name)
+	slugValue = slug.Make(firstNonEmpty(slugValue, name))
+	description = strings.TrimSpace(description)
+
+	switch {
+	case name == "":
+		return db.CreateTagParams{}, "Tag name is required."
+	case slugValue == "":
+		return db.CreateTagParams{}, "Tag slug is required."
+	default:
+		return db.CreateTagParams{
+			Name:        name,
+			Slug:        slugValue,
+			Description: description,
+		}, ""
+	}
+}
+
+func firstNonEmpty(values ...string) string {
+	for _, value := range values {
+		if trimmed := strings.TrimSpace(value); trimmed != "" {
+			return trimmed
+		}
+	}
+
+	return ""
+}
+
+func maxUploadMegabytes(bytes int64) int64 {
+	if bytes <= 0 {
+		return 0
+	}
+
+	const mebibyte = 1024 * 1024
+	value := bytes / mebibyte
+	if bytes%mebibyte != 0 {
+		value++
+	}
+	if value == 0 {
+		value = 1
+	}
+
+	return value
+}
+
+func maxUploadRequestLimit(fileLimit int64) int64 {
+	const multipartOverhead = 1 << 20
+	return fileLimit + multipartOverhead
+}
+
+func isMaxBytesError(err error) bool {
+	var maxErr *http.MaxBytesError
+	return errors.As(err, &maxErr)
+}