Create get for sheet and groups

BE/cmd/api/handlers/getgroup/getgroup.go

@@ -0,0 +1,48 @@
+package getgroup
+
+import (
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+
+	"github.com/julienschmidt/httprouter"
+	"github.com/simplesheet/cmd/api/models"
+	"github.com/simplesheet/pkg/application"
+	"github.com/simplesheet/pkg/middleware"
+)
+
+func getGroup(app *application.Application) httprouter.Handle {
+	return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
+		defer r.Body.Close()
+
+		id := r.Context().Value(models.CtxKey("groupid"))
+		group := &models.Group{ID: id.(int)}
+
+		if err := group.GetByID(r.Context(), app); err != nil {
+			if errors.Is(err, sql.ErrNoRows) {
+				w.WriteHeader(http.StatusPreconditionFailed)
+				fmt.Fprintf(w, "group does not exist")
+				return
+			}
+
+			w.WriteHeader(http.StatusInternalServerError)
+			fmt.Fprintf(w, "Oops")
+			return
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		response, _ := json.Marshal(group)
+		w.Write(response)
+	}
+}
+
+func Do(app *application.Application) httprouter.Handle {
+	mdw := []middleware.Middleware{
+		middleware.LogRequest,
+		validateRequest,
+	}
+
+	return middleware.Chain(getGroup(app), mdw...)
+}

BE/cmd/api/handlers/getgroup/validaterequest.go

@@ -0,0 +1,28 @@
+package getgroup
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strconv"
+
+	"github.com/julienschmidt/httprouter"
+	"github.com/simplesheet/cmd/api/models"
+)
+
+func validateRequest(next httprouter.Handle) httprouter.Handle {
+	return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
+		gid := p.ByName("id")
+
+		id, err := strconv.Atoi(gid)
+		if err != nil {
+			w.WriteHeader(http.StatusPreconditionFailed)
+			fmt.Fprintf(w, "malformed id")
+			return
+		}
+
+		ctx := context.WithValue(r.Context(), models.CtxKey("groupid"), id)
+		r = r.WithContext(ctx)
+		next(w, r, p)
+	}
+}

BE/cmd/api/handlers/getsheet/getsheet.go

@@ -0,0 +1,48 @@
+package getsheet
+
+import (
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+
+	"github.com/julienschmidt/httprouter"
+	"github.com/simplesheet/cmd/api/models"
+	"github.com/simplesheet/pkg/application"
+	"github.com/simplesheet/pkg/middleware"
+)
+
+func getSheet(app *application.Application) httprouter.Handle {
+	return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
+		defer r.Body.Close()
+
+		id := r.Context().Value(models.CtxKey("sheetid"))
+		sheet := &models.Sheet{ID: id.(int)}
+
+		if err := sheet.GetByID(r.Context(), app); err != nil {
+			if errors.Is(err, sql.ErrNoRows) {
+				w.WriteHeader(http.StatusPreconditionFailed)
+				fmt.Fprintf(w, "sheet does not exist")
+				return
+			}
+
+			w.WriteHeader(http.StatusInternalServerError)
+			fmt.Fprintf(w, "Oops")
+			return
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		response, _ := json.Marshal(sheet)
+		w.Write(response)
+	}
+}
+
+func Do(app *application.Application) httprouter.Handle {
+	mdw := []middleware.Middleware{
+		middleware.LogRequest,
+		validateRequest,
+	}
+
+	return middleware.Chain(getSheet(app), mdw...)
+}

BE/cmd/api/handlers/getsheet/validaterequest.go

@@ -0,0 +1,28 @@
+package getsheet
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strconv"
+
+	"github.com/julienschmidt/httprouter"
+	"github.com/simplesheet/cmd/api/models"
+)
+
+func validateRequest(next httprouter.Handle) httprouter.Handle {
+	return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
+		sid := p.ByName("id")
+
+		id, err := strconv.Atoi(sid)
+		if err != nil {
+			w.WriteHeader(http.StatusPreconditionFailed)
+			fmt.Fprintf(w, "malformed id")
+			return
+		}
+
+		ctx := context.WithValue(r.Context(), models.CtxKey("sheetid"), id)
+		r = r.WithContext(ctx)
+		next(w, r, p)
+	}
+}

BE/cmd/api/models/group.go

@@ -74,8 +74,9 @@ func (g *Group) GetByID(ctx context.Context, app *application.Application) error
 		g.ID,
 	).Scan(
 		&g.ID,
-		g.SheetId,
-		g.Positions,
+		&g.SheetId,
+		&g.Name,
+		&g.Positions,
 	)
 
 	if err != nil {

BE/cmd/api/router/router.go

@@ -5,17 +5,22 @@ import (
 	"github.com/simplesheet/cmd/api/handlers/creategroup"
 	"github.com/simplesheet/cmd/api/handlers/createsheet"
 	"github.com/simplesheet/cmd/api/handlers/createuser"
+	"github.com/simplesheet/cmd/api/handlers/getgroup"
+	"github.com/simplesheet/cmd/api/handlers/getsheet"
 	"github.com/simplesheet/cmd/api/handlers/getuser"
 	"github.com/simplesheet/pkg/application"
 )
 
 func Get(app *application.Application) *httprouter.Router {
 	mux := httprouter.New()
 
-	mux.GET("/users/:id", getuser.Do(app))
 	mux.POST("/users", createuser.Do(app))
 	mux.POST("/sheets", createsheet.Do(app))
 	mux.POST("/groups", creategroup.Do(app))
 
+	mux.GET("/users/:id", getuser.Do(app))
+	mux.GET("/sheets/:id", getsheet.Do(app))
+	mux.GET("/groups/:id", getgroup.Do(app))
+
 	return mux
 }