add database to Sessions.

internal/session/database/manager.go

@@ -0,0 +1,67 @@
+package database
+
+import (
+	"fmt"
+	"sync"
+
+	"demodesk/neko/internal/types"
+)
+
+func New() *MembersDatabaseCtx {
+	return &MembersDatabaseCtx{
+		profiles: make(map[string]types.MemberProfile),
+		mu:       sync.Mutex{},
+	}
+}
+
+type MembersDatabaseCtx struct {
+	profiles map[string]types.MemberProfile
+	mu       sync.Mutex
+}
+
+func (manager *MembersDatabaseCtx) Insert(id string, profile types.MemberProfile) error {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
+	_, ok := manager.profiles[id]
+	if ok {
+		return fmt.Errorf("Member ID already exists.")
+	}
+
+	manager.profiles[id] = profile
+	return nil
+}
+
+func (manager *MembersDatabaseCtx) Update(id string, profile types.MemberProfile) error {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
+	_, ok := manager.profiles[id]
+	if !ok {
+		return fmt.Errorf("Member ID does not exist.")
+	}
+
+	manager.profiles[id] = profile
+	return nil
+}
+
+func (manager *MembersDatabaseCtx) Delete(id string) error {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
+	_, ok := manager.profiles[id]
+	if !ok {
+		return fmt.Errorf("Member ID does not exist.")
+	}
+
+	delete(manager.profiles, id)
+	return nil
+}
+
+func (manager *MembersDatabaseCtx) Select(id string) (types.MemberProfile, bool) {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
+	profile, ok := manager.profiles[id]
+	return profile, ok
+}