From 4eb3a9d2a74d75005c970b3b913099b02b2dd32e Mon Sep 17 00:00:00 2001
From: Matthew Rich <matthewrich.conf@gmail.com>
Date: Thu, 19 Sep 2024 17:56:17 +0000
Subject: [PATCH] add system config type

---
 internal/config/system.go      | 81 ++++++++++++++++++++++++++++++++++
 internal/config/system_test.go | 20 +++++++++
 2 files changed, 101 insertions(+)
 create mode 100644 internal/config/system.go
 create mode 100644 internal/config/system_test.go

diff --git a/internal/config/system.go b/internal/config/system.go
new file mode 100644
index 0000000..90e33cc
--- /dev/null
+++ b/internal/config/system.go
@@ -0,0 +1,81 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+	"context"
+	"encoding/json"
+	"net/url"
+	"fmt"
+	"decl/internal/data"
+	"decl/internal/folio"
+	"runtime"
+)
+
+// Collects facts about the system
+
+var (
+	buildValues = map[string]any{
+		"GOOS": runtime.GOOS,
+		"GOARCH": runtime.GOARCH,
+	}
+)
+
+func init() {
+	folio.DocumentRegistry.ConfigurationTypes.Register([]string{"system"}, func(u *url.URL) data.Configuration {
+		s := NewSystem()
+		return s
+	})
+}
+
+type System Generic[any]
+
+func NewSystem() *System {
+	s := make(System)
+	for k, v := range buildValues {
+		s[k] = v
+	}
+	return &s
+}
+
+func (s *System) URI() string {
+	return fmt.Sprintf("%s://%s", s.Type(), "")
+}
+
+func (s *System) SetURI(uri string) error {
+        return nil
+}
+
+func (s *System) SetParsedURI(uri *url.URL) error {
+        return nil
+}
+
+func (s *System) Clone() data.Configuration {
+	jsonSystem, _ := json.Marshal(s)
+	clone := NewSystem()
+	if unmarshalErr := json.Unmarshal(jsonSystem, clone); unmarshalErr != nil {
+		panic(unmarshalErr)
+	}
+	return clone
+}
+
+func (s *System) Has(key string) (ok bool) {
+	_, ok = (*s)[key]
+	return
+}
+
+func (s *System) Type() string {
+	return "system"
+}
+
+func (s *System) Read(context.Context) ([]byte, error) {
+	return nil, nil
+}
+
+func (s *System) GetValue(name string) (result any, err error) {
+	var ok bool
+	if result, ok = (*s)[name]; !ok {
+		err = ErrUnknownConfigurationKey
+	}
+	return
+}
diff --git a/internal/config/system_test.go b/internal/config/system_test.go
new file mode 100644
index 0000000..54b0f25
--- /dev/null
+++ b/internal/config/system_test.go
@@ -0,0 +1,20 @@
+// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
+
+package config
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestNewSystemConfig(t *testing.T) {
+	s := NewSystem()
+	assert.NotNil(t, s)
+}
+
+func TestSystemConfig(t *testing.T) {
+	s := NewSystem()
+	assert.NotNil(t, s)
+
+	assert.True(t, s.Has("GOARCH"))
+}