adding initial support for third-party addons and the basic framework for how they are registered by the system

1 files changed, 89 insertions, 0 deletions

diff --git a/system/addon/manager.go b/system/addon/manager.go
new file mode 100644
index 0000000..1be09c0
--- /dev/null
+++ b/system/addon/manager.go
@@ -0,0 +1,89 @@
+package addon
+
+import (
+	"bytes"
+	"fmt"
+	"html/template"
+	"net/url"
+
+	"encoding/json"
+
+	"github.com/ponzu-cms/ponzu/management/editor"
+)
+
+const defaultInput = `<input type="hidden" name="%s" value="%s"/>`
+
+const managerHTML = `
+<div class="card editor">
+    <form method="post" action="/admin/addon" enctype="multipart/form-data">
+		{{ .DefaultInputs }}
+		{{ .Editor }}
+	</form>
+</div>
+`
+
+type manager struct {
+	DefaultInputs template.HTML
+	Editor        template.HTML
+}
+
+// Manage ...
+func Manage(data url.Values, reverseDNS string) ([]byte, error) {
+	a, ok := Types[reverseDNS]
+	if !ok {
+		return nil, fmt.Errorf("Addon has not been added to addon.Types map")
+	}
+
+	at := a()
+
+	// convert data => json => at{}
+	j, err := json.Marshal(data)
+	if err != nil {
+		return nil, err
+	}
+
+	err = json.Unmarshal(j, &at)
+	if err != nil {
+		return nil, err
+	}
+
+	e, ok := at.(editor.Editable)
+	if !ok {
+		return nil, fmt.Errorf("Addon is not editable - must implement editor.Editable: %T", at)
+	}
+
+	v, err := e.MarshalEditor()
+	if err != nil {
+		return nil, fmt.Errorf("Couldn't marshal editor for addon: %s", err.Error())
+	}
+
+	inputs := &bytes.Buffer{}
+	fields := []string{
+		"addon_name",
+		"addon_author",
+		"addon_author_url",
+		"addon_version",
+		"addon_reverse_dns",
+		"addon_status",
+	}
+
+	for _, f := range fields {
+		input := fmt.Sprintf(defaultInput, f, data.Get(f))
+		_, err := inputs.WriteString(input)
+		if err != nil {
+			return nil, fmt.Errorf("Failed to write input for addon view: %s", f)
+		}
+	}
+
+	m := manager{
+		DefaultInputs: template.HTML(inputs.Bytes()),
+		Editor:        template.HTML(v),
+	}
+
+	// execute html template into buffer for func return val
+	buf := &bytes.Buffer{}
+	tmpl := template.Must(template.New("manager").Parse(managerHTML))
+	tmpl.Execute(buf, m)
+
+	return buf.Bytes(), nil
+}