Handling Calendar changes

cmd/web/routes.go

@@ -44,6 +44,7 @@ func routes(app *config.AppConfig) http.Handler {
 		mux.Get("/reservations-new", handlers.Repo.AdminNewReservations)
 		mux.Get("/reservations-all", handlers.Repo.AdminAllReservations)
 		mux.Get("/reservations-calendar", handlers.Repo.AdminReservationsCalendar)
+		mux.Post("/reservations-calendar", handlers.Repo.AdminPostReservationsCalendar)
 		mux.Get("/process-reservation/{src}/{id}", handlers.Repo.AdminProcessReservation)
 		mux.Get("/delete-reservation/{src}/{id}", handlers.Repo.AdminDeleteReservation)
 

internal/handlers/handlers.go

@@ -685,10 +685,9 @@ func (m *Repository) AdminReservationsCalendar(w http.ResponseWriter, r *http.Re
 					reservationMap[d.Format("2006-01-2")] = y.ReservationID
 				}
 			} else {
-				// it's a block
-				for d := y.StartDate; !d.After(y.EndDate); d = d.AddDate(0, 0, 1) {
-					blockMap[d.Format("2006-01-2")] = y.ID
-				}
+				// it's a block.
+				// NOTE:A block can only be set day by day
+				blockMap[y.StartDate.Format("2006-01-2")] = y.ID
 			}
 		}
 		data[fmt.Sprintf("reservation_map_%d", x.ID)] = reservationMap
@@ -728,3 +727,63 @@ func (m *Repository) AdminDeleteReservation(w http.ResponseWriter, r *http.Reque
 
 	http.Redirect(w, r, fmt.Sprintf("/admin/reservations-%s", src), http.StatusSeeOther)
 }
+
+// AdminPostReservationsCalendar handles post of reservation calendar
+func (m *Repository) AdminPostReservationsCalendar(w http.ResponseWriter, r *http.Request) {
+	if err := r.ParseForm(); err != nil {
+		helpers.ServerError(w, err)
+		return
+	}
+	year, _ := strconv.Atoi(r.Form.Get("y"))
+	month, _ := strconv.Atoi(r.Form.Get("m"))
+
+	// process blocks
+	rooms, err := m.DB.AllRooms()
+	if err != nil {
+		helpers.ServerError(w, err)
+		return
+	}
+
+	form := forms.New(r.PostForm)
+	for _, x := range rooms {
+		// Get the block map from the session. Loop through entire map, if we
+		// have an entry in the map taht does not exist in our posted data,
+		// and if the restriction id > 0, then it is a block we need to remove.
+		curMap, _ := m.App.Session.Get(r.Context(), fmt.Sprintf("block_map_%d", x.ID)).(map[string]int)
+		// TODO check session get ok
+		for name, value := range curMap {
+			// ok will be false if the value is not in the map
+			if val, ok := curMap[name]; ok {
+				// only pay attention to values > 0, and that are not in the form post
+				// the rest are just placeholders for days without blocks
+				if val > 0 {
+					if !form.Has(fmt.Sprintf("remove_block_%d_%s", x.ID, name)) {
+						err := m.DB.DeleteBlockByID(value)
+						if err != nil {
+							helpers.ServerError(w, err)
+							return
+						}
+					}
+				}
+			}
+		}
+	}
+
+	// handle new blocks
+	for name := range r.PostForm {
+		if strings.HasPrefix(name, "add_block") {
+			exploded := strings.Split(name, "_")
+			roomID, _ := strconv.Atoi(exploded[2])
+			startDate, _ := time.Parse("2006-01-2", exploded[3])
+			// insert a new block
+			err := m.DB.InsertBlockForRoom(roomID, startDate)
+			if err != nil {
+				helpers.ServerError(w, err)
+				return
+			}
+		}
+	}
+
+	m.App.Session.Put(r.Context(), "flash", "Changes saved")
+	http.Redirect(w, r, fmt.Sprintf("/admin/reservations-calendar?y=%d&m=%d", year, month), http.StatusSeeOther)
+}

internal/repository/dbrepo/postgres.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"go-udemy-web-1/internal/models"
+	"log"
 	"time"
 
 	"golang.org/x/crypto/bcrypt"
@@ -459,3 +460,35 @@ func (m *postgresDBRepo) GetRestrictionsForRoomByDate(roomId int, start, end tim
 	}
 	return restrictions, nil
 }
+
+// InsertBlockForRoom inserts a room restriction
+func (m *postgresDBRepo) InsertBlockForRoom(id int, startDate time.Time) error {
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+
+	query := `insert into room_restrictions (start_date, end_date, room_id, restriction_id,
+                 created_at, updated_at)
+             values ($1, $2, $3, $4, $5, $6)`
+
+	_, err := m.DB.ExecContext(ctx, query, startDate, startDate.AddDate(0, 0, 1), id, 2, time.Now(), time.Now())
+	if err != nil {
+		log.Println(err)
+		return err
+	}
+	return nil
+}
+
+// DeleteBlockByID deletes a block by ID
+func (m *postgresDBRepo) DeleteBlockByID(id int) error {
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+
+	query := `delete from room_restrictions where id = $1`
+
+	_, err := m.DB.ExecContext(ctx, query, id)
+	if err != nil {
+		log.Println(err)
+		return err
+	}
+	return nil
+}

internal/repository/dbrepo/test-repo.go

@@ -128,3 +128,13 @@ func (m *testDBRepo) GetRestrictionsForRoomByDate(roomId int, start, end time.Ti
 	var restrictions []models.RoomRestriction
 	return restrictions, nil
 }
+
+// InsertBlockForRoom inserts a room restriction
+func (m *testDBRepo) InsertBlockForRoom(id int, startDate time.Time) error {
+	return nil
+}
+
+// DeleteBlockByID deletes a block by ID
+func (m *testDBRepo) DeleteBlockByID(id int) error {
+	return nil
+}

internal/repository/repository.go

@@ -24,4 +24,6 @@ type DatabaseRepo interface {
 	UpdateProcessedForReservation(id, processed int) error
 	AllRooms() ([]models.Room, error)
 	GetRestrictionsForRoomByDate(roomId int, start, end time.Time) ([]models.RoomRestriction, error)
+	InsertBlockForRoom(id int, startDate time.Time) error
+	DeleteBlockByID(id int) error
 }

templates/admin-reservations-calendar.page.tmpl

@@ -26,7 +26,12 @@ Reservations Calendar
     </div>
 
     <div class="clearfix"></div>
-{{range $rooms}}
+<form method="post" action="/admin/reservations-calendar">
+    <input type="hidden" name="csrf_token" value="{{.CSRFToken}}">
+    <input type="hidden" name="m" value="{{index .StringMap "this_month"}}">
+    <input type="hidden" name="y" value="{{index .StringMap "this_month_year"}}">
+
+    {{range $rooms}}
         {{$roomID := .ID}}
         {{$blocks := index $.Data (printf "block_map_%d" .ID)}}
         {{$reservations := index $.Data (printf "reservation_map_%d" .ID)}}
@@ -55,6 +60,7 @@ Reservations Calendar
                             value="{{index $blocks (printf "%s-%s-%d" $curYear $curMonth (add $index 1))}}"
                             {{else}}
                             name="add_block_{{$roomID}}_{{printf "%s-%s-%d" $curYear $curMonth (add $index 1)}}"
+                            value="1"
                             {{end}}
                         type="checkbox">
                         {{end}}
@@ -63,6 +69,9 @@ Reservations Calendar
                 </tr>
             </table>
         </div>
-{{end}}
+    {{end}}
+    <hr>
+    <input type="submit" class="btn btn-primary" value="Save Changes">
+    </form>
 </div>
 {{end}}