feat(embed): make authelia embedable (#8841)

This adds a highly experimental option for developers looking to embed Authelia within another go binary.

Closes #5803

Signed-off-by: James Elliott <james-d-elliott@users.noreply.github.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/experimental/embed/types.go b/experimental/embed/types.go
new file mode 100644
index 000000000..bd048206e
--- /dev/null
+++ b/experimental/embed/types.go
@@ -0,0 +1,24 @@
+package embed
+
+import (
+	"github.com/authelia/authelia/v4/internal/configuration/schema"
+	"github.com/authelia/authelia/v4/internal/middlewares"
+)
+
+// Configuration is a type alias for the internal schema.Configuration type. It allows manually configuring Authelia
+// and transitioning to the internal implementation.
+type Configuration schema.Configuration
+
+// ToInternal converts this Configuration struct into a *schema.Configuration struct using a type cast.
+func (c *Configuration) ToInternal() *schema.Configuration {
+	return (*schema.Configuration)(c)
+}
+
+// Providers is a type alias for the internal middlewares.Providers type. It allows manually performing setup of the
+// various Authelia providers and transitioning to the internal implementation.
+type Providers middlewares.Providers
+
+// ToInternal converts this Providers struct into a middlewares.Providers struct using a type cast.
+func (p Providers) ToInternal() middlewares.Providers {
+	return middlewares.Providers(p)
+}