From: APTX <marek321@gmail.com>
Date: Sat, 16 Aug 2014 15:42:13 +0000 (+0200)
Subject: Add nextEpisode and previousEpisode.
X-Git-Url: https://gitweb.aptx.org/?a=commitdiff_plain;h=93f9d8486e5706b4916f2476b649ce61e7e638ee;p=localmylist.git

Add nextEpisode and previousEpisode.

The intended use is for players requesting a file
for the next/previous episode in a series.
---

diff --git a/localmylist/database.cpp b/localmylist/database.cpp
index 83eb130..03f99dd 100644
--- a/localmylist/database.cpp
+++ b/localmylist/database.cpp
@@ -463,6 +463,54 @@ OpenFileData Database::openEpisode(int aid, int epno, const QString &type)
 	return readOpenFileData(q);
 }
 
+OpenFileData Database::nextEpisode(int fid)
+{
+	QSqlQuery &q = prepare(R"(
+	SELECT f.fid, a.title_romaji, e.title_english, e.epno, fl.path, fl.host_id,
+			CASE WHEN split_part(f.resolution, 'x', 1) = '' OR split_part(f.resolution, 'x', 2) = '' THEN 0 ELSE split_part(f.resolution, 'x', 1)::int * split_part(f.resolution, 'x', 2)::int END pixels
+		FROM file f
+		JOIN episode e ON f.eid = e.eid
+		JOIN anime a ON a.aid = f.aid
+		JOIN file_location fl ON fl.fid = f.fid
+		WHERE f.fid = (SELECT f2.fid
+			FROM file f
+			JOIN episode e ON f.eid = e.eid
+			JOIN episode e2 ON e2.aid = e.aid AND ((e2.epno > e.epno AND e2.type = e.type) OR e2.type > e.type) -- No type ordering here (but it works as the enum is ordered)
+			JOIN episode_type et ON et.type = e2.type
+			JOIN file f2 ON f2.eid = e2.eid AND f2.fid <> f.fid
+			WHERE f.fid = :fid
+			ORDER BY et.ordering DESC, e2.epno ASC -- et.ordering should be DESC: 99 -> S1 (not O1)
+			LIMIT 1)
+	)");
+	q.bindValue(":fid", fid);
+
+	return readOpenFileData(q);
+}
+
+OpenFileData Database::previousEpisode(int fid)
+{
+	QSqlQuery &q = prepare(R"(
+	SELECT f.fid, a.title_romaji, e.title_english, e.epno, fl.path, fl.host_id,
+			CASE WHEN split_part(f.resolution, 'x', 1) = '' OR split_part(f.resolution, 'x', 2) = '' THEN 0 ELSE split_part(f.resolution, 'x', 1)::int * split_part(f.resolution, 'x', 2)::int END pixels
+		FROM file f
+		JOIN episode e ON f.eid = e.eid
+		JOIN anime a ON a.aid = f.aid
+		JOIN file_location fl ON fl.fid = f.fid
+		WHERE f.fid = (SELECT f2.fid
+			FROM file f
+			JOIN episode e ON f.eid = e.eid
+			JOIN episode e2 ON e2.aid = e.aid AND ((e2.epno < e.epno AND e2.type = e.type) OR e2.type < e.type) -- No type ordering here (but it works as the enum is ordered)
+			JOIN episode_type et ON et.type = e2.type
+			JOIN file f2 ON f2.eid = e2.eid AND f2.fid <> f.fid
+			WHERE f.fid = :fid
+			ORDER BY et.ordering ASC, e2.epno DESC -- et.ordering should be ASC: C1 -> S99 (not 99)
+			LIMIT 1)
+	)");
+	q.bindValue(":fid", fid);
+
+	return readOpenFileData(q);
+}
+
 HostInfo Database::getHostInfo(const QString &hostName)
 {
 	QSqlQuery &q = prepare(
diff --git a/localmylist/database.h b/localmylist/database.h
index 902ee37..de7e97a 100644
--- a/localmylist/database.h
+++ b/localmylist/database.h
@@ -72,6 +72,20 @@ public slots:
 	LocalMyList::OpenFileData openFile(int fid);
 	LocalMyList::OpenFileData openEpisode(int aid, int epno, const QString &type = "");
 
+	/**
+	 * @brief nextEpisode return the next available episode
+	 * @param fid the id for which the next episode is to be found
+	 * @return OpenFileData with fid != 0 if a next episode is found
+	 */
+	LocalMyList::OpenFileData nextEpisode(int fid);
+
+	/**
+	 * @brief previousEpisode return the prefioud available episode
+	 * @param fid the id for which the previous episode is to be found
+	 * @return OpenFileData with fid != 0 if a previous episode is found
+	 */
+	LocalMyList::OpenFileData previousEpisode(int fid);
+
 	LocalMyList::HostInfo getHostInfo(const QString &hostName);
 
 	QVariantMap getConfig();