From 370c77ab38b2c09ba8b3538d9dd8bed75b572585 Mon Sep 17 00:00:00 2001
From: yash <yash.shatilov@gmail.com>
Date: Tue, 23 Jan 2024 18:28:59 +0300
Subject: [PATCH] add get recipes page handler

---
 .../http-server/handlers/recipe/recipe.go     |  6 +-
 .../http-server/handlers/recipes/recipes.go   | 70 +++++++++++++++++++
 2 files changed, 72 insertions(+), 4 deletions(-)
 create mode 100644 internal/http-server/handlers/recipes/recipes.go

diff --git a/internal/http-server/handlers/recipe/recipe.go b/internal/http-server/handlers/recipe/recipe.go
index 2318945..e138c06 100644
--- a/internal/http-server/handlers/recipe/recipe.go
+++ b/internal/http-server/handlers/recipe/recipe.go
@@ -66,11 +66,9 @@ func New(log *slog.Logger, recipeProvider RecipeProvider) http.HandlerFunc {
 			return
 		}
 		// render response
-		var resp Response = Response{
+		render.JSON(w, r, Response{
 			Response: resp.OK(),
 			Recipe:   recipe,
-		}
-		log.Debug("response", slog.Any("resp", resp))
-		render.JSON(w, r, resp)
+		})
 	}
 }
diff --git a/internal/http-server/handlers/recipes/recipes.go b/internal/http-server/handlers/recipes/recipes.go
new file mode 100644
index 0000000..5e3faa7
--- /dev/null
+++ b/internal/http-server/handlers/recipes/recipes.go
@@ -0,0 +1,70 @@
+package recipes
+
+import (
+	"context"
+	"log/slog"
+	"net/http"
+	"recipes/internal/domain/models"
+	resp "recipes/internal/lib/api/response"
+	"recipes/internal/lib/logger/sl"
+
+	"github.com/go-chi/chi/v5/middleware"
+	"github.com/go-chi/render"
+	"github.com/go-playground/validator/v10"
+)
+
+type Request struct {
+	Page uint `json:"page" validate:"required,gt=0"`
+}
+
+type Response struct {
+	resp.Response
+	Recipes []models.Recipe `json:"recipes"`
+}
+
+type RecipeProvider interface {
+	GetRecipes(ctx context.Context, offset, limit int) ([]models.Recipe, error)
+}
+
+const getRecipesLimit int = 16
+
+func New(log *slog.Logger, recipeProvider RecipeProvider) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		const op = "http-server.handlers.recipes.New"
+
+		log = log.With(
+			slog.String("op", op),
+			slog.String("request_id", middleware.GetReqID(r.Context())),
+		)
+
+		var req Request
+		// decode request
+		err := render.DecodeJSON(r.Body, &req)
+		if err != nil {
+			log.Error("failed to decode request body", sl.Err(err))
+			render.JSON(w, r, resp.Error("failed to decode request"))
+			return
+		}
+		log.Debug("request body decoded", slog.Any("request", req))
+		// validate request
+		if err := validator.New().Struct(req); err != nil {
+			validateErr := err.(validator.ValidationErrors)
+
+			log.Error("invalid request", sl.Err(err))
+			render.JSON(w, r, resp.ValidationError(validateErr))
+			return
+		}
+		// get from storage
+		recipes, err := recipeProvider.GetRecipes(r.Context(), getRecipesLimit*(int(req.Page)-1), getRecipesLimit)
+		if err != nil {
+			log.Error("failed to get recipes from storage", sl.Err(err))
+			render.JSON(w, r, resp.Error("failed to get recipes"))
+			return
+		}
+		// return
+		render.JSON(w, r, Response{
+			Response: resp.OK(),
+			Recipes:  recipes,
+		})
+	}
+}