Michael Chus
e97cd5048c
- Added background task manager with goroutine execution and panic recovery - Replaced SSE streaming with background task execution for: * Price recalculation (RecalculateAll) * Stock import (ImportStockLog) * Pricelist creation (CreateWithProgress) - Implemented unified polling for task status and DB connection in frontend - Added task indicator in top bar showing running tasks count - Added toast notifications for task completion/error - Tasks automatically cleaned up after 10 minutes - Tasks show progress (0-100%) with descriptive messages - Updated handler constructors to receive task manager - Added API endpoints for task status (/api/tasks, /api/tasks/:id) Fixes issue with SSE disconnection on slow connections during long-running operations
407 lines
11 KiB
Go
407 lines
11 KiB
Go
package handlers
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import (
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"context"
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"encoding/csv"
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"errors"
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"fmt"
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"io"
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"net/http"
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"strconv"
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"strings"
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"git.mchus.pro/mchus/priceforge/internal/models"
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"git.mchus.pro/mchus/priceforge/internal/services/pricelist"
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"git.mchus.pro/mchus/priceforge/internal/tasks"
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"github.com/gin-gonic/gin"
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)
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type PricelistHandler struct {
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service *pricelist.Service
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dbUser string
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taskManager *tasks.Manager
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}
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func NewPricelistHandler(service *pricelist.Service, dbUser string, taskManager *tasks.Manager) *PricelistHandler {
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return &PricelistHandler{service: service, dbUser: dbUser, taskManager: taskManager}
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}
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func (h *PricelistHandler) List(c *gin.Context) {
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page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
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perPage, _ := strconv.Atoi(c.DefaultQuery("per_page", "20"))
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source := c.Query("source")
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activeOnly := c.DefaultQuery("active_only", "false") == "true"
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var (
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list []models.PricelistSummary
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total int64
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err error
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)
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if activeOnly {
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list, total, err = h.service.ListActiveBySource(page, perPage, source)
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} else {
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list, total, err = h.service.ListBySource(page, perPage, source)
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}
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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c.JSON(http.StatusOK, gin.H{"pricelists": list, "total": total, "page": page, "per_page": perPage})
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}
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func (h *PricelistHandler) Get(c *gin.Context) {
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id, err := strconv.ParseUint(c.Param("id"), 10, 32)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "invalid pricelist ID"})
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return
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}
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pl, err := h.service.GetByID(uint(id))
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if err != nil {
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c.JSON(http.StatusNotFound, gin.H{"error": "pricelist not found"})
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return
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}
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c.JSON(http.StatusOK, pl)
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}
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func (h *PricelistHandler) Create(c *gin.Context) {
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canWrite, debugInfo := h.service.CanWriteDebug()
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if !canWrite {
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c.JSON(http.StatusForbidden, gin.H{"error": "pricelist write is not allowed", "debug": debugInfo})
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return
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}
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var req struct {
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Source string `json:"source"`
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Items []struct {
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LotName string `json:"lot_name"`
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Price float64 `json:"price"`
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} `json:"items"`
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}
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if err := c.ShouldBindJSON(&req); err != nil && !errors.Is(err, io.EOF) {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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source := string(models.NormalizePricelistSource(req.Source))
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createdBy := h.dbUser
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if strings.TrimSpace(createdBy) == "" {
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createdBy = "unknown"
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}
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items := make([]pricelist.CreateItemInput, 0, len(req.Items))
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for _, item := range req.Items {
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items = append(items, pricelist.CreateItemInput{LotName: item.LotName, Price: item.Price})
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}
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pl, err := h.service.CreateForSourceWithProgress(createdBy, source, items, nil)
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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c.JSON(http.StatusCreated, pl)
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}
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func (h *PricelistHandler) CreateWithProgress(c *gin.Context) {
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canWrite, debugInfo := h.service.CanWriteDebug()
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if !canWrite {
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c.JSON(http.StatusForbidden, gin.H{"error": "pricelist write is not allowed", "debug": debugInfo})
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return
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}
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var req struct {
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Source string `json:"source"`
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Items []struct {
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LotName string `json:"lot_name"`
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Price float64 `json:"price"`
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} `json:"items"`
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}
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if err := c.ShouldBindJSON(&req); err != nil && !errors.Is(err, io.EOF) {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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source := string(models.NormalizePricelistSource(req.Source))
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createdBy := h.dbUser
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if strings.TrimSpace(createdBy) == "" {
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createdBy = "unknown"
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}
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items := make([]pricelist.CreateItemInput, 0, len(req.Items))
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for _, item := range req.Items {
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items = append(items, pricelist.CreateItemInput{LotName: item.LotName, Price: item.Price})
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}
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taskID := h.taskManager.Submit(tasks.TaskTypePricelistCreate, func(ctx context.Context, progressCb func(int, string)) (map[string]interface{}, error) {
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pl, err := h.service.CreateForSourceWithProgress(createdBy, source, items, func(p pricelist.CreateProgress) {
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// Convert service progress to task progress
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var progress int
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if p.Total > 0 {
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progress = int(float64(p.Current) / float64(p.Total) * 100)
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}
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progressCb(progress, p.Message)
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})
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if err != nil {
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return nil, err
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}
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// Send final completion message
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progressCb(100, fmt.Sprintf("Прайслист создан: v%d из источника %s", pl.Version, pl.Source))
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return map[string]interface{}{
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"pricelist_id": pl.ID,
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"pricelist_version": pl.Version,
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"source": pl.Source,
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}, nil
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})
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c.JSON(http.StatusOK, gin.H{"task_id": taskID})
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}
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func (h *PricelistHandler) Delete(c *gin.Context) {
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canWrite, debugInfo := h.service.CanWriteDebug()
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if !canWrite {
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c.JSON(http.StatusForbidden, gin.H{"error": "pricelist write is not allowed", "debug": debugInfo})
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return
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}
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id, err := strconv.ParseUint(c.Param("id"), 10, 32)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "invalid pricelist ID"})
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return
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}
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if err := h.service.Delete(uint(id)); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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c.JSON(http.StatusOK, gin.H{"message": "pricelist deleted"})
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}
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func (h *PricelistHandler) SetActive(c *gin.Context) {
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canWrite, debugInfo := h.service.CanWriteDebug()
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if !canWrite {
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c.JSON(http.StatusForbidden, gin.H{"error": "pricelist write is not allowed", "debug": debugInfo})
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return
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}
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id, err := strconv.ParseUint(c.Param("id"), 10, 32)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "invalid pricelist ID"})
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return
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}
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var req struct {
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IsActive bool `json:"is_active"`
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}
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if err := c.ShouldBindJSON(&req); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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if err := h.service.SetActive(uint(id), req.IsActive); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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c.JSON(http.StatusOK, gin.H{"message": "updated", "is_active": req.IsActive})
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}
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func (h *PricelistHandler) GetItems(c *gin.Context) {
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id, err := strconv.ParseUint(c.Param("id"), 10, 32)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "invalid pricelist ID"})
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return
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}
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page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
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perPage, _ := strconv.Atoi(c.DefaultQuery("per_page", "50"))
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search := c.Query("search")
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items, total, err := h.service.GetItems(uint(id), page, perPage, search)
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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c.JSON(http.StatusOK, gin.H{"items": items, "total": total, "page": page, "per_page": perPage})
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}
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func (h *PricelistHandler) GetLotNames(c *gin.Context) {
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id, err := strconv.ParseUint(c.Param("id"), 10, 32)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "invalid pricelist ID"})
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return
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}
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lotNames, err := h.service.GetLotNames(uint(id))
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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c.JSON(http.StatusOK, gin.H{"lot_names": lotNames, "total": len(lotNames)})
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}
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func (h *PricelistHandler) CanWrite(c *gin.Context) {
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canWrite, debugInfo := h.service.CanWriteDebug()
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c.JSON(http.StatusOK, gin.H{"can_write": canWrite, "debug": debugInfo})
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}
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func (h *PricelistHandler) GetLatest(c *gin.Context) {
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source := string(models.NormalizePricelistSource(c.DefaultQuery("source", string(models.PricelistSourceEstimate))))
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pl, err := h.service.GetLatestActiveBySource(source)
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if err != nil {
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c.JSON(http.StatusNotFound, gin.H{"error": "no pricelists available"})
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return
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}
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c.JSON(http.StatusOK, pl)
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}
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func (h *PricelistHandler) ExportCSV(c *gin.Context) {
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id, err := strconv.ParseUint(c.Param("id"), 10, 32)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "invalid pricelist ID"})
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return
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}
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// Get pricelist info
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pl, err := h.service.GetByID(uint(id))
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if err != nil {
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c.JSON(http.StatusNotFound, gin.H{"error": "pricelist not found"})
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return
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}
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// Set response headers for CSV download
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filename := fmt.Sprintf("pricelist_%s.csv", pl.Version)
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c.Header("Content-Type", "text/csv; charset=utf-8")
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c.Header("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", filename))
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// Write UTF-8 BOM for Excel compatibility
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c.Writer.Write([]byte{0xEF, 0xBB, 0xBF})
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// Create CSV writer with semicolon separator
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writer := csv.NewWriter(c.Writer)
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writer.Comma = ';'
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defer writer.Flush()
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// Determine if warehouse source
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isWarehouse := strings.ToLower(pl.Source) == "warehouse"
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// Write CSV header
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var header []string
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if isWarehouse {
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header = []string{"Артикул", "Категория", "Описание", "Доступно", "Partnumbers", "Цена, $", "Настройки"}
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} else {
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header = []string{"Артикул", "Категория", "Описание", "Цена, $", "Настройки"}
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}
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if err := writer.Write(header); err != nil {
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c.String(http.StatusInternalServerError, "Failed to write CSV header")
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return
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}
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// Stream items in batches to avoid loading everything into memory
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err = h.service.StreamItemsForExport(uint(id), 500, func(items []models.PricelistItem) error {
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for _, item := range items {
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row := make([]string, 0, len(header))
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// Артикул
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row = append(row, item.LotName)
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// Категория
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category := item.Category
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if category == "" {
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category = "-"
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}
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row = append(row, category)
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// Описание
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description := item.LotDescription
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if description == "" {
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description = "-"
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}
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row = append(row, description)
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if isWarehouse {
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// Доступно
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qty := "-"
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if item.AvailableQty != nil {
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qty = fmt.Sprintf("%.3f", *item.AvailableQty)
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}
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row = append(row, qty)
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// Partnumbers
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partnumbers := "-"
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if len(item.Partnumbers) > 0 {
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partnumbers = strings.Join(item.Partnumbers, ", ")
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}
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row = append(row, partnumbers)
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}
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// Цена
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row = append(row, fmt.Sprintf("%.2f", item.Price))
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// Настройки
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settings := formatPriceSettings(item)
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row = append(row, settings)
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if err := writer.Write(row); err != nil {
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return err
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}
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}
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// Flush after each batch
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writer.Flush()
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return nil
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})
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if err != nil {
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// Already started writing, can't return JSON error
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c.String(http.StatusInternalServerError, "Export failed: %v", err)
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return
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}
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}
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func formatPriceSettings(item models.PricelistItem) string {
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var settings []string
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hasManualPrice := item.ManualPrice != nil && *item.ManualPrice > 0
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hasMeta := item.MetaPrices != ""
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method := strings.ToLower(item.PriceMethod)
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// Method indicator
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if hasManualPrice {
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settings = append(settings, "РУЧН")
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} else if method == "average" {
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settings = append(settings, "Сред")
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} else if method == "weighted_median" {
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settings = append(settings, "Взвеш. мед")
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} else {
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settings = append(settings, "Мед")
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}
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// Period (only if not manual price)
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if !hasManualPrice {
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period := item.PricePeriodDays
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switch period {
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case 7:
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settings = append(settings, "1н")
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case 30:
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settings = append(settings, "1м")
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case 90:
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settings = append(settings, "3м")
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case 365:
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settings = append(settings, "1г")
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case 0:
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settings = append(settings, "все")
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default:
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settings = append(settings, fmt.Sprintf("%dд", period))
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}
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}
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// Coefficient
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if item.PriceCoefficient != 0 {
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coef := item.PriceCoefficient
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if coef > 0 {
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settings = append(settings, fmt.Sprintf("+%.0f%%", coef))
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} else {
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settings = append(settings, fmt.Sprintf("%.0f%%", coef))
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}
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}
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// Meta article indicator
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if hasMeta {
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settings = append(settings, "МЕТА")
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}
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if len(settings) == 0 {
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return "-"
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}
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return strings.Join(settings, " | ")
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}
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