Introduction to sheets model and api method

BE/cmd/api/handlers/getallsheets/getallsheets.go

@@ -0,0 +1,46 @@
+package getallsheets
+
+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 getAllSheets(app *application.Application) httprouter.Handle {
+	return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
+		defer r.Body.Close()
+
+		allsheets := &models.AllSheets{}
+
+		if err := allsheets.GetAll(r.Context(), app); err != nil {
+			if errors.Is(err, sql.ErrNoRows) {
+				w.WriteHeader(http.StatusPreconditionFailed)
+				fmt.Fprintf(w, "sheets does not exist")
+				return
+			}
+
+			w.WriteHeader(http.StatusInternalServerError)
+			fmt.Fprintf(w, "Oops")
+			return
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		response, _ := json.Marshal(allsheets)
+		w.Write(response)
+	}
+}
+
+func Do(app *application.Application) httprouter.Handle {
+	mdw := []middleware.Middleware{
+		middleware.LogRequest,
+	}
+
+	return middleware.Chain(getAllSheets(app), mdw...)
+}

BE/cmd/api/models/sheets.go

@@ -0,0 +1,48 @@
+package models
+
+import (
+	"context"
+	"database/sql/driver"
+	"encoding/json"
+	"errors"
+	"github.com/simplesheet/pkg/application"
+)
+
+type SheetSlice []Sheet
+
+type AllSheets struct {
+	Sheets SheetSlice `json:"sheets"`
+}
+
+func (a SheetSlice) Value() (driver.Value, error) {
+	return json.Marshal(a)
+}
+
+func (s *SheetSlice) Scan(src interface{}) error {
+	switch v := src.(type) {
+	case []byte:
+		return json.Unmarshal(v, s)
+	case string:
+		return json.Unmarshal([]byte(v), s)
+	}
+	return errors.New("type assertion failed")
+}
+
+func (s *AllSheets) GetAll(ctx context.Context, app *application.Application) error {
+	stmt := `
+		SELECT *
+		FROM sheets
+	`
+	err := app.DB.Client.QueryRowContext(
+		ctx,
+		stmt,
+	).Scan(
+		&s.Sheets,
+	)
+
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

BE/cmd/api/router/router.go

@@ -4,6 +4,7 @@ import (
 	"github.com/julienschmidt/httprouter"
 	"github.com/simplesheet/cmd/api/handlers/createsheet"
 	"github.com/simplesheet/cmd/api/handlers/createuser"
+	"github.com/simplesheet/cmd/api/handlers/getallsheets"
 	"github.com/simplesheet/cmd/api/handlers/getsheet"
 	"github.com/simplesheet/cmd/api/handlers/getuser"
 	"github.com/simplesheet/pkg/application"
@@ -18,5 +19,7 @@ func Get(app *application.Application) *httprouter.Router {
 	mux.GET("/users/:id", getuser.Do(app))
 	mux.GET("/sheets/:id", getsheet.Do(app))
 
+	mux.GET("/sheets", getallsheets.Do(app))
+
 	return mux
 }