Add calendar support

5 files changed, 150 insertions, 2 deletions

diff --git a/api/dto/calendar.go b/api/dto/calendar.go
new file mode 100644
index 0000000..33da621
--- /dev/null
+++ b/api/dto/calendar.go
@@ -0,0 +1,15 @@
+package dto
+
+type GetCalendarResponse struct {
+	ID   int32  `json:"id"`
+	Name string `json:"name"`
+	Key  string `json:"key"`
+	URL  string `json:"url"`
+}
+
+type CreateCalendarResponse struct {
+	ID   int32  `json:"id"`
+	Name string `json:"name"`
+	Key  string `json:"key"`
+	URL  string `json:"url"`
+}
diff --git a/api/handlers/calendar.go b/api/handlers/calendar.go
new file mode 100644
index 0000000..85a9b00
--- /dev/null
+++ b/api/handlers/calendar.go
@@ -0,0 +1,81 @@
+package handlers
+
+import (
+	"errors"
+
+	"github.com/LMBishop/confplanner/api/dto"
+	"github.com/LMBishop/confplanner/pkg/calendar"
+	"github.com/gofiber/fiber/v2"
+)
+
+func GetCalendar(calendarService calendar.Service, baseURL string) fiber.Handler {
+	// TODO create config service
+	return func(c *fiber.Ctx) error {
+		uid := c.Locals("uid").(int32)
+
+		cal, err := calendarService.GetCalendarForUser(uid)
+		if err != nil {
+			if errors.Is(err, calendar.ErrCalendarNotFound) {
+				return &dto.ErrorResponse{
+					Code:    fiber.StatusNotFound,
+					Message: "Calendar not found",
+				}
+			}
+
+			return err
+		}
+
+		return &dto.OkResponse{
+			Code: fiber.StatusOK,
+			Data: &dto.GetCalendarResponse{
+				ID:   cal.ID,
+				Name: cal.Name,
+				Key:  cal.Key,
+				URL:  baseURL + "/calendar/ical?name=" + cal.Name + "&key=" + cal.Key,
+			},
+		}
+	}
+}
+
+func CreateCalendar(calendarService calendar.Service, baseURL string) fiber.Handler {
+	return func(c *fiber.Ctx) error {
+		uid := c.Locals("uid").(int32)
+
+		cal, err := calendarService.CreateCalendarForUser(uid)
+		if err != nil {
+			return err
+		}
+
+		return &dto.OkResponse{
+			Code: fiber.StatusCreated,
+			Data: &dto.CreateCalendarResponse{
+				ID:   cal.ID,
+				Name: cal.Name,
+				Key:  cal.Key,
+				URL:  baseURL + "/calendar/ical?name=" + cal.Name + "&key=" + cal.Key,
+			},
+		}
+	}
+}
+
+func DeleteCalendar(calendarService calendar.Service) fiber.Handler {
+	return func(c *fiber.Ctx) error {
+		uid := c.Locals("uid").(int32)
+
+		err := calendarService.DeleteCalendarForUser(uid)
+		if err != nil {
+			if errors.Is(err, calendar.ErrCalendarNotFound) {
+				return &dto.ErrorResponse{
+					Code:    fiber.StatusNotFound,
+					Message: "Calendar not found",
+				}
+			}
+
+			return err
+		}
+
+		return &dto.OkResponse{
+			Code: fiber.StatusOK,
+		}
+	}
+}
diff --git a/api/handlers/ical.go b/api/handlers/ical.go
new file mode 100644
index 0000000..c4b3989
--- /dev/null
+++ b/api/handlers/ical.go
@@ -0,0 +1,43 @@
+package handlers
+
+import (
+	"crypto/subtle"
+
+	"github.com/LMBishop/confplanner/api/dto"
+	"github.com/LMBishop/confplanner/pkg/calendar"
+	"github.com/LMBishop/confplanner/pkg/ical"
+	"github.com/gofiber/fiber/v2"
+)
+
+func GetIcal(icalService ical.Service, calendarService calendar.Service) fiber.Handler {
+	return func(c *fiber.Ctx) error {
+		name := c.Query("name")
+		key := c.Query("key")
+
+		if name == "" || key == "" {
+			return &dto.ErrorResponse{
+				Code:    fiber.StatusBadRequest,
+				Message: "Both name and key must be specified",
+			}
+		}
+
+		calendar, err := calendarService.GetCalendarByName(name)
+		if err != nil {
+			return err
+		}
+
+		if subtle.ConstantTimeCompare([]byte(key), []byte(calendar.Key)) != 1 {
+			return &dto.ErrorResponse{
+				Code:    fiber.StatusUnauthorized,
+				Message: "Invalid key",
+			}
+		}
+
+		ical, err := icalService.GenerateIcalForCalendar(*calendar)
+		if err != nil {
+			return err
+		}
+
+		return c.SendString(ical)
+	}
+}
diff --git a/api/handlers/schedule.go b/api/handlers/schedule.go
index fd3a183..46589ab 100644
--- a/api/handlers/schedule.go
+++ b/api/handlers/schedule.go
@@ -18,7 +18,7 @@ func GetSchedule(service schedule.Service) fiber.Handler {
 			Code: fiber.StatusOK,
 			Data: &dto.GetScheduleResponse{
 				Schedule:    nilslice.Initialize(*schedule),
-				LastUpdated: *lastUpdated,
+				LastUpdated: lastUpdated,
 			},
 		}
 	}
diff --git a/api/router.go b/api/router.go
index 82a29b1..dc7e487 100644
--- a/api/router.go
+++ b/api/router.go
@@ -8,7 +8,9 @@ import (
 	"github.com/LMBishop/confplanner/api/dto"
 	"github.com/LMBishop/confplanner/api/handlers"
 	"github.com/LMBishop/confplanner/api/middleware"
+	"github.com/LMBishop/confplanner/pkg/calendar"
 	"github.com/LMBishop/confplanner/pkg/favourites"
+	"github.com/LMBishop/confplanner/pkg/ical"
 	"github.com/LMBishop/confplanner/pkg/schedule"
 	"github.com/LMBishop/confplanner/pkg/user"
 	"github.com/gofiber/fiber/v2"
@@ -19,9 +21,11 @@ type ApiServices struct {
 	UserService       user.Service
 	FavouritesService favourites.Service
 	ScheduleService   schedule.Service
+	CalendarService   calendar.Service
+	IcalService       ical.Service
 }
 
-func NewServer(apiServices ApiServices) *fiber.App {
+func NewServer(apiServices ApiServices, baseURL string) *fiber.App {
 	sessionStore := session.New(session.Config{
 		Expiration:     24 * time.Hour,
 		KeyLookup:      "cookie:confplanner_session",
@@ -63,5 +67,10 @@ func NewServer(apiServices ApiServices) *fiber.App {
 
 	app.Get("/schedule", requireAuthenticated, handlers.GetSchedule(apiServices.ScheduleService))
 
+	app.Get("/calendar", requireAuthenticated, handlers.GetCalendar(apiServices.CalendarService, baseURL))
+	app.Post("/calendar", requireAuthenticated, handlers.CreateCalendar(apiServices.CalendarService, baseURL))
+	app.Delete("/calendar", requireAuthenticated, handlers.DeleteCalendar(apiServices.CalendarService))
+	app.Use("/calendar/ical", handlers.GetIcal(apiServices.IcalService, apiServices.CalendarService))
+
 	return app
 }