Refactor: Restructure project

- Add an internal folder where all the internal code lives
- Make a state.go and state_test.go for the public interface

This gives a more clear separation between functions and modules. It
also makes this a more typical Go project setup.

1 files changed, 52 insertions, 0 deletions

diff --git a/internal/wireguard.go b/internal/wireguard.go
new file mode 100644
index 0000000..4ec12bd
--- /dev/null
+++ b/internal/wireguard.go
@@ -0,0 +1,52 @@
+package internal
+
+import (
+	"fmt"
+	"regexp"
+
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+)
+
+func wireguardGenerateKey() (wgtypes.Key, error) {
+	key, error := wgtypes.GeneratePrivateKey()
+	return key, error
+}
+
+// FIXME: Instead of doing a regex replace, decide if we should use a parser
+func wireguardConfigAddKey(config string, key wgtypes.Key) string {
+	interface_section := "[Interface]"
+	interface_section_escaped := regexp.QuoteMeta(interface_section)
+
+	// (?m) enables multi line mode
+	// ^ match from beginning of line
+	// $ match till end of line
+	// So it matches [Interface] section exactly
+	interface_re := regexp.MustCompile(fmt.Sprintf("(?m)^%s$", interface_section_escaped))
+	to_replace := fmt.Sprintf("%s\nPrivateKey = %s", interface_section, key.String())
+	return interface_re.ReplaceAllString(config, to_replace)
+}
+
+func (server *Server) WireguardGetConfig() (string, error) {
+	profile_id := server.Profiles.Current
+	wireguardKey, wireguardErr := wireguardGenerateKey()
+
+	if wireguardErr != nil {
+		return "", wireguardErr
+	}
+
+	wireguardPublicKey := wireguardKey.PublicKey().String()
+	configWireguard, _, configErr := server.APIConnectWireguard(profile_id, wireguardPublicKey)
+
+	if configErr != nil {
+		return "", configErr
+	}
+
+	// FIXME: Store expiry
+	// This needs the go code a way to identify a connection
+	// Use the uuid of the connection e.g. on Linux
+	// This needs the client code to call the go code
+
+	configWireguardKey := wireguardConfigAddKey(configWireguard, wireguardKey)
+
+	return configWireguardKey, nil
+}