From 3d05533a3108f646c7b6e45fa1241fecb7ef7551 Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Tue, 14 Jan 2020 22:19:54 +0100
Subject: [PATCH] carddav: add very basic Client

---
 carddav/carddav.go  |  3 +++
 carddav/client.go   | 44 ++++++++++++++++++++++++++++++++++++++++++++
 carddav/elements.go | 10 ++++++++++
 client.go           |  2 +-
 elements.go         |  2 +-
 5 files changed, 59 insertions(+), 2 deletions(-)
 create mode 100644 carddav/carddav.go
 create mode 100644 carddav/client.go
 create mode 100644 carddav/elements.go

diff --git a/carddav/carddav.go b/carddav/carddav.go
new file mode 100644
index 0000000..61d50bb
--- /dev/null
+++ b/carddav/carddav.go
@@ -0,0 +1,3 @@
+package carddav
+
+const namespace = "urn:ietf:params:xml:ns:carddav"
diff --git a/carddav/client.go b/carddav/client.go
new file mode 100644
index 0000000..44723c4
--- /dev/null
+++ b/carddav/client.go
@@ -0,0 +1,44 @@
+package carddav
+
+import (
+	"encoding/xml"
+	"net/http"
+
+	"github.com/emersion/go-webdav"
+	"github.com/emersion/go-webdav/internal"
+)
+
+type Client struct {
+	*webdav.Client
+
+	ic *internal.Client
+}
+
+func NewClient(c *http.Client, endpoint string) (*Client, error) {
+	wc, err := webdav.NewClient(c, endpoint)
+	if err != nil {
+		return nil, err
+	}
+	ic, err := internal.NewClient(c, endpoint)
+	if err != nil {
+		return nil, err
+	}
+	return &Client{wc, ic}, nil
+}
+
+func (c *Client) FindAddressbookHomeSet(principal string) (string, error) {
+	name := xml.Name{namespace, "addressbook-home-set"}
+	propfind := internal.NewPropPropfind(name)
+
+	resp, err := c.ic.PropfindFlat(principal, propfind)
+	if err != nil {
+		return "", err
+	}
+
+	var prop addressbookHomeSet
+	if err := resp.DecodeProp(name, &prop); err != nil {
+		return "", err
+	}
+
+	return prop.Href, nil
+}
diff --git a/carddav/elements.go b/carddav/elements.go
new file mode 100644
index 0000000..8188585
--- /dev/null
+++ b/carddav/elements.go
@@ -0,0 +1,10 @@
+package carddav
+
+import (
+	"encoding/xml"
+)
+
+type addressbookHomeSet struct {
+	Name xml.Name `xml:"urn:ietf:params:xml:ns:carddav addressbook-home-set"`
+	Href string   `xml:"href"`
+}
diff --git a/client.go b/client.go
index f2bd2b2..ca9a844 100644
--- a/client.go
+++ b/client.go
@@ -28,7 +28,7 @@ func (c *Client) FindCurrentUserPrincipal() (string, error) {
 		return "", err
 	}
 
-	var prop currentUserPrincipalProp
+	var prop currentUserPrincipal
 	if err := resp.DecodeProp(name, &prop); err != nil {
 		return "", err
 	}
diff --git a/elements.go b/elements.go
index 04abb0c..5c554db 100644
--- a/elements.go
+++ b/elements.go
@@ -4,7 +4,7 @@ import (
 	"encoding/xml"
 )
 
-type currentUserPrincipalProp struct {
+type currentUserPrincipal struct {
 	Name xml.Name `xml:"DAV: current-user-principal"`
 	Href string   `xml:"href"`
 }