445 lines
11 KiB
Go
445 lines
11 KiB
Go
package routes
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import (
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"database/sql"
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"encoding/json"
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"fmt"
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"log/slog"
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"net/http"
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"os"
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"path/filepath"
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"regexp"
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"strconv"
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"strings"
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"github.com/google/uuid"
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"github.com/gorilla/mux"
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)
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type ProductImageItem struct {
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ID int64 `json:"id"`
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FileName string `json:"file_name"`
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FileSize int64 `json:"file_size"`
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Storage string `json:"storage_path"`
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ContentURL string `json:"content_url"`
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UUID string `json:"uuid,omitempty"`
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ThumbURL string `json:"thumb_url,omitempty"`
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FullURL string `json:"full_url,omitempty"`
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}
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var uuidPattern = regexp.MustCompile(`(?i)[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}`)
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func normalizeDimParam(v string) string {
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s := strings.TrimSpace(v)
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if s == "" || s == "0" {
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return ""
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}
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return s
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}
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func uniqueNonEmpty(items ...string) []string {
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out := make([]string, 0, len(items))
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seen := make(map[string]struct{}, len(items))
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for _, it := range items {
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v := normalizeDimParam(it)
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if v == "" {
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continue
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}
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if _, ok := seen[v]; ok {
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continue
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}
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seen[v] = struct{}{}
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out = append(out, v)
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}
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return out
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}
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func buildNameLikePatterns(token string) []string {
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t := strings.ToUpper(strings.TrimSpace(token))
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if t == "" {
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return nil
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}
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return []string{
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"% " + t + " %",
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"%-" + t + "-%",
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"%-" + t + "_%",
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"%_" + t + "_%",
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"%(" + t + ")%",
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t + " %",
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}
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}
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func resolveDimvalFromFileNameToken(pg *sql.DB, column, token string) string {
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patterns := buildNameLikePatterns(token)
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if len(patterns) == 0 {
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return ""
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}
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query := fmt.Sprintf(`
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SELECT x.dimv
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FROM (
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SELECT COALESCE(%s::text, '') AS dimv, COUNT(*) AS cnt
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FROM dfblob
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WHERE src_table='mmitem'
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AND typ='img'
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AND COALESCE(%s::text, '') <> ''
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AND (
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UPPER(COALESCE(file_name,'')) LIKE $1 OR
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UPPER(COALESCE(file_name,'')) LIKE $2 OR
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UPPER(COALESCE(file_name,'')) LIKE $3 OR
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UPPER(COALESCE(file_name,'')) LIKE $4 OR
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UPPER(COALESCE(file_name,'')) LIKE $5 OR
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UPPER(COALESCE(file_name,'')) LIKE $6
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)
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GROUP BY COALESCE(%s::text, '')
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) x
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ORDER BY x.cnt DESC, x.dimv
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LIMIT 1
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`, column, column, column)
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var v string
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if err := pg.QueryRow(query,
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patterns[0],
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patterns[1],
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patterns[2],
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patterns[3],
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patterns[4],
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patterns[5],
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).Scan(&v); err != nil {
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return ""
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}
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return normalizeDimParam(v)
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}
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func extractImageUUID(storagePath, fileName string) string {
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if m := uuidPattern.FindString(storagePath); m != "" {
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return strings.ToLower(m)
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}
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if m := uuidPattern.FindString(fileName); m != "" {
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return strings.ToLower(m)
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}
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return ""
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}
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// GET /api/product-images?code=...&dim1=...&dim3=...
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func GetProductImagesHandler(pg *sql.DB) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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reqID := strings.TrimSpace(r.Header.Get("X-Request-ID"))
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if reqID == "" {
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reqID = uuid.NewString()
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}
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w.Header().Set("X-Request-ID", reqID)
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code := strings.TrimSpace(r.URL.Query().Get("code"))
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dim1 := strings.TrimSpace(r.URL.Query().Get("dim1"))
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if dim1 == "" {
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dim1 = strings.TrimSpace(r.URL.Query().Get("color"))
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}
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dim3 := strings.TrimSpace(r.URL.Query().Get("dim3"))
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if dim3 == "" {
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dim3 = strings.TrimSpace(r.URL.Query().Get("yaka"))
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}
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if dim3 == "" {
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dim3 = strings.TrimSpace(r.URL.Query().Get("renk2"))
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}
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dim1ID := strings.TrimSpace(r.URL.Query().Get("dim1_id"))
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if dim1ID == "" {
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dim1ID = strings.TrimSpace(r.URL.Query().Get("itemdim1"))
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}
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dim3ID := strings.TrimSpace(r.URL.Query().Get("dim3_id"))
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if dim3ID == "" {
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dim3ID = strings.TrimSpace(r.URL.Query().Get("itemdim3"))
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}
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if code == "" {
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http.Error(w, "Eksik parametre: code gerekli", http.StatusBadRequest)
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return
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}
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// Rule: code -> mmitem.id
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var mmItemID int64
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err := pg.QueryRow(`
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SELECT id
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FROM mmitem
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WHERE UPPER(REPLACE(COALESCE(code,''), ' ', '')) = UPPER(REPLACE(COALESCE($1,''), ' ', ''))
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ORDER BY id
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LIMIT 1
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`, code).Scan(&mmItemID)
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if err == sql.ErrNoRows {
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err = pg.QueryRow(`
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SELECT id
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FROM mmitem
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WHERE UPPER(REPLACE(REGEXP_REPLACE(COALESCE(code,''), '^.*-', ''), ' ', '')) =
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UPPER(REPLACE(REGEXP_REPLACE(COALESCE($1,''), '^.*-', ''), ' ', ''))
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ORDER BY id
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LIMIT 1
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`, code).Scan(&mmItemID)
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}
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if err != nil {
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if err == sql.ErrNoRows {
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w.Header().Set("Content-Type", "application/json; charset=utf-8")
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_ = json.NewEncoder(w).Encode([]ProductImageItem{})
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return
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}
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http.Error(w, "Gorsel sorgu hatasi: "+err.Error(), http.StatusInternalServerError)
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return
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}
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runQuery := func(dim1Filter, dim3Filter string) ([]ProductImageItem, error) {
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query := `
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SELECT
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id,
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COALESCE(file_name,'') AS file_name,
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COALESCE(file_size,0) AS file_size,
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COALESCE(storage_path,'') AS storage_path
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FROM dfblob
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WHERE typ='img'
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AND src_table='mmitem'
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AND src_id=$1`
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args := []interface{}{mmItemID}
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argPos := 2
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if dim1Filter != "" {
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query += fmt.Sprintf(" AND COALESCE(dimval1::text,'') = $%d", argPos)
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args = append(args, dim1Filter)
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argPos++
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if dim3Filter != "" {
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query += fmt.Sprintf(" AND COALESCE(dimval3::text,'') = $%d", argPos)
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args = append(args, dim3Filter)
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argPos++
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}
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}
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query += `
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ORDER BY
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COALESCE(sort_order,999999),
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id`
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rows, err := pg.Query(query, args...)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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items := make([]ProductImageItem, 0, 16)
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for rows.Next() {
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var it ProductImageItem
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if err := rows.Scan(&it.ID, &it.FileName, &it.FileSize, &it.Storage); err != nil {
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continue
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}
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it.ContentURL = fmt.Sprintf("/api/product-images/%d/content", it.ID)
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if u := extractImageUUID(it.Storage, it.FileName); u != "" {
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it.UUID = u
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it.ThumbURL = "/uploads/image/t300/" + u + ".jpg"
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it.FullURL = "/uploads/image/" + u + ".jpg"
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}
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items = append(items, it)
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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return items, nil
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}
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// Rule:
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// dim1!=0 && dim3!=0 => dimval1=dim1 AND dimval3=dim3
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// dim1!=0 && dim3==0 => dimval1=dim1
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// dim1==0 && dim3==0 => generic photos
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//
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// Frontend'den yanlis dim id gelebildigi icin:
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// 1) once *_id ile deneriz
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// 2) sonuc yoksa kod degeriyle fallback deneriz.
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resolvedDim1ID := normalizeDimParam(dim1ID)
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if resolvedDim1ID == "" && normalizeDimParam(dim1) != "" {
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resolvedDim1ID = resolveDimvalFromFileNameToken(pg, "dimval1", dim1)
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}
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resolvedDim3ID := normalizeDimParam(dim3ID)
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if resolvedDim3ID == "" && normalizeDimParam(dim3) != "" {
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resolvedDim3ID = resolveDimvalFromFileNameToken(pg, "dimval3", dim3)
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}
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dim1Candidates := uniqueNonEmpty(resolvedDim1ID, dim1ID, dim1)
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if len(dim1Candidates) == 0 {
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dim1Candidates = []string{""}
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}
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dim3Candidates := uniqueNonEmpty(resolvedDim3ID, dim3ID, dim3)
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items := make([]ProductImageItem, 0, 16)
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selectedDim1 := ""
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selectedDim3 := ""
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var queryErr error
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for _, d1 := range dim1Candidates {
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localDim3Candidates := []string{""}
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if d1 != "" {
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if len(dim3Candidates) > 0 {
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localDim3Candidates = append([]string{}, dim3Candidates...)
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localDim3Candidates = append(localDim3Candidates, "")
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}
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}
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for _, d3 := range localDim3Candidates {
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var runErr error
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items, runErr = runQuery(d1, d3)
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if runErr != nil {
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queryErr = runErr
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continue
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}
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if len(items) > 0 {
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selectedDim1 = d1
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selectedDim3 = d3
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break
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}
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if selectedDim1 == "" && selectedDim3 == "" {
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selectedDim1 = d1
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selectedDim3 = d3
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}
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}
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if len(items) > 0 {
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break
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}
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}
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if queryErr != nil && len(items) == 0 {
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slog.Error("product_images.list.query_failed",
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"req_id", reqID,
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"code", code,
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"dim1", dim1,
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"dim1_id", dim1ID,
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"dim3", dim3,
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"dim3_id", dim3ID,
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"err", queryErr.Error(),
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)
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http.Error(w, "Gorsel sorgu hatasi: "+queryErr.Error(), http.StatusInternalServerError)
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return
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}
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slog.Info("product_images.list.ok",
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"req_id", reqID,
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"code", code,
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"dim1", dim1,
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"dim1_id", dim1ID,
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"resolved_dim1_id", resolvedDim1ID,
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"dim3", dim3,
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"dim3_id", dim3ID,
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"resolved_dim3_id", resolvedDim3ID,
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"selected_dim1", selectedDim1,
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"selected_dim3", selectedDim3,
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"count", len(items),
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)
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w.Header().Set("Content-Type", "application/json; charset=utf-8")
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_ = json.NewEncoder(w).Encode(items)
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}
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}
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// GET /api/product-images/{id}/content
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func GetProductImageContentHandler(pg *sql.DB) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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reqID := strings.TrimSpace(r.Header.Get("X-Request-ID"))
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if reqID == "" {
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reqID = uuid.NewString()
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}
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w.Header().Set("X-Request-ID", reqID)
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idStr := mux.Vars(r)["id"]
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id, err := strconv.ParseInt(idStr, 10, 64)
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if err != nil || id <= 0 {
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http.Error(w, "Gecersiz gorsel id", http.StatusBadRequest)
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return
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}
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var (
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fileName string
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storagePath string
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storedInDB bool
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binData []byte
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)
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err = pg.QueryRow(`
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SELECT
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COALESCE(file_name,''),
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COALESCE(storage_path,''),
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COALESCE(stored_in_db,false),
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bin
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FROM dfblob
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WHERE id = $1
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AND typ = 'img'
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`, id).Scan(&fileName, &storagePath, &storedInDB, &binData)
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if err != nil {
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if err == sql.ErrNoRows {
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http.NotFound(w, r)
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return
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}
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http.Error(w, "Gorsel okunamadi: "+err.Error(), http.StatusInternalServerError)
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return
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}
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if storedInDB && len(binData) > 0 {
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w.Header().Set("Content-Type", http.DetectContentType(binData))
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w.Header().Set("Cache-Control", "public, max-age=3600")
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_, _ = w.Write(binData)
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return
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}
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resolved, _ := resolveStoragePath(storagePath)
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if resolved == "" {
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http.NotFound(w, r)
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return
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}
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w.Header().Set("Cache-Control", "public, max-age=3600")
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http.ServeFile(w, r, resolved)
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}
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}
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func resolveStoragePath(storagePath string) (string, []string) {
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raw := strings.TrimSpace(storagePath)
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if raw == "" {
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return "", nil
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}
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if i := strings.Index(raw, "?"); i >= 0 {
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raw = raw[:i]
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}
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raw = strings.ReplaceAll(raw, "\\", "/")
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if scheme := strings.Index(raw, "://"); scheme >= 0 {
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rest := raw[scheme+3:]
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if i := strings.Index(rest, "/"); i >= 0 {
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raw = rest[i:]
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}
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}
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raw = strings.TrimPrefix(raw, "./")
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raw = strings.TrimPrefix(raw, "/")
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raw = strings.TrimPrefix(raw, "uploads/")
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raw = filepath.ToSlash(filepath.Clean(raw))
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relUploads := filepath.FromSlash(filepath.Join("uploads", raw))
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candidates := []string{
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filepath.Clean(storagePath),
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filepath.FromSlash(filepath.Clean(strings.TrimPrefix(storagePath, "/"))),
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filepath.FromSlash(filepath.Clean(raw)),
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relUploads,
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filepath.Join(".", relUploads),
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filepath.Join("..", relUploads),
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filepath.Join("..", "..", relUploads),
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}
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if root := strings.TrimSpace(os.Getenv("BLOB_ROOT")); root != "" {
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candidates = append(candidates,
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filepath.Join(root, raw),
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filepath.Join(root, relUploads),
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filepath.Join(root, "uploads", raw),
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)
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}
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for _, p := range candidates {
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if p == "" {
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continue
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}
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if st, err := os.Stat(p); err == nil && !st.IsDir() {
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return p, candidates
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}
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}
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return "", candidates
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}
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