From 290c18b8b9de28f9ba2fa89882ecfb75a1379b09 Mon Sep 17 00:00:00 2001
From: Eduard Urbach <e.urbach@gmail.com>
Date: Thu, 19 Apr 2018 17:48:15 +0200
Subject: [PATCH] See friends who liked a character

---
 pages/character/character.go      | 15 ++++++++++++++-
 pages/character/character.pixy    | 16 ++++++++++++++--
 pages/character/character.scarlet |  4 ++++
 utils/Intersection.go             | 16 ++++++++++++++++
 utils/routetests/All.go           |  4 ++++
 5 files changed, 52 insertions(+), 3 deletions(-)
 create mode 100644 utils/Intersection.go

diff --git a/pages/character/character.go b/pages/character/character.go
index b284f29f..36b4f171 100644
--- a/pages/character/character.go
+++ b/pages/character/character.go
@@ -67,5 +67,18 @@ func Get(ctx *aero.Context) string {
 		},
 	}
 
-	return ctx.HTML(components.CharacterDetails(character, characterAnime, quotes, mainQuote, user))
+	// Friends
+	friendIDs := utils.Intersection(character.Likes, user.Follows().Items)
+	friendObjects := arn.DB.GetMany("User", friendIDs)
+	friends := []*arn.User{}
+
+	for _, obj := range friendObjects {
+		if obj == nil {
+			continue
+		}
+
+		friends = append(friends, obj.(*arn.User))
+	}
+
+	return ctx.HTML(components.CharacterDetails(character, characterAnime, quotes, friends, mainQuote, user))
 }
diff --git a/pages/character/character.pixy b/pages/character/character.pixy
index 244c4226..119616ad 100644
--- a/pages/character/character.pixy
+++ b/pages/character/character.pixy
@@ -4,7 +4,7 @@ component CharacterTabs(character *arn.Character, user *arn.User)
 		Tab("Edit", "pencil", character.Link() + "/edit")
 		Tab("History", "history", character.Link() + "/history")
 
-component CharacterDetails(character *arn.Character, characterAnime []*arn.Anime, quotes []*arn.Quote, mainQuote *arn.Quote, user *arn.User)
+component CharacterDetails(character *arn.Character, characterAnime []*arn.Anime, quotes []*arn.Quote, friends []*arn.User, mainQuote *arn.Quote, user *arn.User)
 	.character-page
 		.character-left-column
 			.character-header
@@ -66,6 +66,19 @@ component CharacterDetails(character *arn.Character, characterAnime []*arn.Anime
 							else
 								td.character-attributes-value= attribute.Value
 			
+			if len(friends) > 0
+				.character-friends
+					h3.mountable Friends
+
+					.user-avatars.mountable
+						each friend in friends
+							.mountable(data-mountable-type="friend")
+								if friend.IsActive()
+									Avatar(friend)
+								else
+									.inactive-user
+										Avatar(friend)
+
 			if character.GetMapping("myanimelist/character") != ""
 				h3.mountable Links
 
@@ -77,4 +90,3 @@ component CharacterDetails(character *arn.Character, characterAnime []*arn.Anime
 					a.light-button(href="/api" + character.Link(), target="_blank")
 						Icon("code")
 						span API
-
diff --git a/pages/character/character.scarlet b/pages/character/character.scarlet
index 0e00103a..df09f31c 100644
--- a/pages/character/character.scarlet
+++ b/pages/character/character.scarlet
@@ -56,6 +56,10 @@
 	.quote-footer
 		display none
 
+.character-friends
+	.user-avatars
+		justify-content flex-start
+
 > 1250px
 	.character-page
 		horizontal
diff --git a/utils/Intersection.go b/utils/Intersection.go
new file mode 100644
index 00000000..eebf6ade
--- /dev/null
+++ b/utils/Intersection.go
@@ -0,0 +1,16 @@
+package utils
+
+import "github.com/animenotifier/arn"
+
+// Intersection returns common elements of a and b.
+func Intersection(a []string, b []string) []string {
+	var c []string
+
+	for _, obj := range a {
+		if arn.Contains(b, obj) {
+			c = append(c, obj)
+		}
+	}
+
+	return c
+}
diff --git a/utils/routetests/All.go b/utils/routetests/All.go
index f133e69b..84dfda35 100644
--- a/utils/routetests/All.go
+++ b/utils/routetests/All.go
@@ -6,6 +6,10 @@ var routeTests = map[string][]string{
 		"/+Akyoto",
 	},
 
+	"/user/:nick/characters/liked": []string{
+		"/+Akyoto/characters/liked",
+	},
+
 	"/user/:nick/forum/threads": []string{
 		"/+Akyoto/forum/threads",
 	},