From 3c60a0c22cc7945d8298a76d9dc2e30c1b2fb3c3 Mon Sep 17 00:00:00 2001
From: redmatrix <redmatrix@redmatrix.me>
Date: Thu, 16 Jul 2015 20:20:42 -0700
Subject: provide any single year of exported items

---
 include/identity.php | 37 +++++++++++++++++++++++++++++++++++--
 include/items.php    |  1 -
 mod/uexport.php      | 14 ++++++++++++--
 3 files changed, 47 insertions(+), 5 deletions(-)

diff --git a/include/identity.php b/include/identity.php
index 8ba5d64db..5ca626c72 100644
--- a/include/identity.php
+++ b/include/identity.php
@@ -583,8 +583,14 @@ function identity_basic_export($channel_id, $items = false) {
 
 	/** @warning this may run into memory limits on smaller systems */
 
-	$r = q("select * from item where item_wall = 1 and item_deleted = 0 and uid = %d",
-		intval($channel_id)
+	/** export one year of posts. If you want to export and import all posts you have to start with 
+	  * the first year and export/import them in ascending order. 
+	  */
+
+	$r = q("select * from item where item_wall = 1 and item_deleted = 0 and uid = %d and created > %s - INTERVAL %s",
+		intval($channel_id),
+		db_utcnow(), 
+		db_quoteinterval('1 YEAR')
 	);
 	if($r) {
 		$ret['item'] = array();
@@ -598,6 +604,33 @@ function identity_basic_export($channel_id, $items = false) {
 }
 
 
+function identity_export_year($channel_id,$year) {
+
+	if(! $year)
+		return array();
+
+	$ret = array();
+	$mindate = datetime_convert('UTC','UTC',$year . '-01-01 00:00:00');
+	$maxdate = datetime_convert('UTC','UTC',$year+1 . '-01-01 00:00:00');
+	$r = q("select * from item where item_wall = 1 and item_deleted = 0 and uid = %d and created >= '%s' and created < '%s' ",
+		intval($channel_id),
+		dbesc($mindate), 
+		dbesc($maxdate)
+	);
+
+	if($r) {
+		$ret['item'] = array();
+		xchan_query($r);
+		$r = fetch_post_tags($r,true);
+		foreach($r as $rr)
+			$ret['item'][] = encode_item($rr,true);
+	}
+
+	return $ret;
+}
+
+
+
 /**
  * @brief Loads a profile into the App structure.
  *
diff --git a/include/items.php b/include/items.php
index c067d3c1e..b1a0dacdf 100755
--- a/include/items.php
+++ b/include/items.php
@@ -4389,7 +4389,6 @@ function first_post_date($uid,$wall = false) {
 	$r = q("select id, created from item
 		where uid = %d and id = parent $item_normal $wall_sql
 		order by created asc limit 1",
-		intval(ITEM_VISIBLE),
 		intval($uid)
 
 	);
diff --git a/mod/uexport.php b/mod/uexport.php
index edcb2fa84..8217a17c4 100644
--- a/mod/uexport.php
+++ b/mod/uexport.php
@@ -9,9 +9,17 @@ function uexport_init(&$a) {
 
 		require_once('include/identity.php');
 
+		if(argc() > 1 && intval(argv(1)) > 1900) {
+			$year = intval(argv(1));
+		}
+
 		header('content-type: application/octet_stream');
-		header('content-disposition: attachment; filename="' . $channel['channel_address'] . '.json"' );
+		header('content-disposition: attachment; filename="' . $channel['channel_address'] . (($year) ? '-' . $year : '') . '.json"' );
 
+		if($year) {
+			echo json_encode(identity_export_year(local_channel(),$year));
+			killme();
+		}
 
 		if(argc() > 1 && argv(1) === 'basic') {
 			echo json_encode(identity_basic_export(local_channel()));
@@ -34,7 +42,9 @@ function uexport_content(&$a) {
 		'$basictitle' => t('Export Channel'),
 		'$basic' => t('Export your basic channel information to a small file.  This acts as a backup of your connections, permissions, profile and basic data, which can be used to import your data to a new hub, but	does not contain your content.'),
 		'$fulltitle' => t('Export Content'),
-		'$full' => t('Export your channel information and all the content to a JSON backup. This backs up all of your connections, permissions, profile data and all of your content, but is generally not suitable for importing a channel to a new hub as this file may be VERY large.  Please be patient - it may take several minutes for this download to begin.')
+		'$full' => t('Export your channel information and all the content to a JSON backup. This backs up all of your connections, permissions, profile data and the last year of posts. This file may be VERY large.  Please be patient - it may take several minutes for this download to begin.'),
+		'$by_year' => t('Export your posts from a given year.'),
+		
 	));
 return $o;
 }
-- 
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