110 lines
2.9 KiB
Go
110 lines
2.9 KiB
Go
package units
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import (
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"errors"
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"net/http"
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"github.com/gin-gonic/gin"
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"github.com/google/uuid"
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)
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type Handler struct {
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service *Service
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}
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func NewHandler(service *Service) *Handler {
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return &Handler{service: service}
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}
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type unitResponse struct {
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ID uuid.UUID `json:"id"`
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Name string `json:"name"`
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Symbol string `json:"symbol"`
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}
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func toResponse(u *Unit) unitResponse {
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return unitResponse{ID: u.ID, Name: u.Name, Symbol: u.Symbol}
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}
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func (h *Handler) List(c *gin.Context) {
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list, err := h.service.List(c.Request.Context())
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to list units"})
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return
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}
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resp := make([]unitResponse, 0, len(list))
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for _, u := range list {
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resp = append(resp, toResponse(u))
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}
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c.JSON(http.StatusOK, gin.H{"units": resp})
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}
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type upsertRequest struct {
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Name string `json:"name" binding:"required"`
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Symbol string `json:"symbol" binding:"required"`
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}
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func (h *Handler) Create(c *gin.Context) {
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var req upsertRequest
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if err := c.ShouldBindJSON(&req); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "validation error", "details": err.Error()})
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return
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}
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u, err := h.service.Create(c.Request.Context(), req.Name, req.Symbol)
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if err != nil {
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if errors.Is(err, ErrSymbolTaken) {
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c.JSON(http.StatusConflict, gin.H{"error": "symbol already in use"})
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return
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}
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c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to create unit"})
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return
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}
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c.JSON(http.StatusCreated, toResponse(u))
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}
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func (h *Handler) Update(c *gin.Context) {
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id, err := uuid.Parse(c.Param("id"))
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "invalid id"})
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return
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}
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var req upsertRequest
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if err := c.ShouldBindJSON(&req); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "validation error", "details": err.Error()})
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return
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}
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u, err := h.service.Update(c.Request.Context(), id, req.Name, req.Symbol)
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if err != nil {
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switch {
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case errors.Is(err, ErrNotFound):
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c.JSON(http.StatusNotFound, gin.H{"error": "unit not found"})
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case errors.Is(err, ErrSymbolTaken):
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c.JSON(http.StatusConflict, gin.H{"error": "symbol already in use"})
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default:
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c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to update unit"})
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}
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return
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}
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c.JSON(http.StatusOK, toResponse(u))
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}
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func (h *Handler) Delete(c *gin.Context) {
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id, err := uuid.Parse(c.Param("id"))
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "invalid id"})
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return
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}
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if err := h.service.Delete(c.Request.Context(), id); err != nil {
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switch {
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case errors.Is(err, ErrNotFound):
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c.JSON(http.StatusNotFound, gin.H{"error": "unit not found"})
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case errors.Is(err, ErrInUse):
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c.JSON(http.StatusConflict, gin.H{"error": "unit is used by existing price tiers"})
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default:
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c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to delete unit"})
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}
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return
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}
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c.Status(http.StatusNoContent)
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}
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