From d43acb8593d7ed82e4fcb27623d0583169cde840 Mon Sep 17 00:00:00 2001
From: Davide De Rosa <keeshux@gmail.com>
Date: Thu, 21 Nov 2019 15:41:27 +0100
Subject: [PATCH] Display informational footer on empty favorites

---
 .../Global/SwiftGen+Strings.swift             |  6 ++++++
 Passepartout-iOS/Global/en.lproj/App.strings  |  1 +
 .../Scenes/ProviderPoolViewController.swift   | 20 +++++++++++++++++++
 3 files changed, 27 insertions(+)

diff --git a/Passepartout-iOS/Global/SwiftGen+Strings.swift b/Passepartout-iOS/Global/SwiftGen+Strings.swift
index 8e52a509..a351a67b 100644
--- a/Passepartout-iOS/Global/SwiftGen+Strings.swift
+++ b/Passepartout-iOS/Global/SwiftGen+Strings.swift
@@ -76,6 +76,12 @@ internal enum L10n {
           /// Unfavorite
           internal static let unfavorite = L10n.tr("App", "provider.pool.actions.unfavorite")
         }
+        internal enum Sections {
+          internal enum EmptyFavorites {
+            /// Swipe left on a location to add or remove it from Favorites.
+            internal static let footer = L10n.tr("App", "provider.pool.sections.empty_favorites.footer")
+          }
+        }
       }
       internal enum Preset {
         internal enum Cells {
diff --git a/Passepartout-iOS/Global/en.lproj/App.strings b/Passepartout-iOS/Global/en.lproj/App.strings
index 93755369..a32a1052 100644
--- a/Passepartout-iOS/Global/en.lproj/App.strings
+++ b/Passepartout-iOS/Global/en.lproj/App.strings
@@ -50,6 +50,7 @@
 
 "provider.pool.actions.favorite" = "Favorite";
 "provider.pool.actions.unfavorite" = "Unfavorite";
+"provider.pool.sections.empty_favorites.footer" = "Swipe left on a location to add or remove it from Favorites.";
 
 "provider.preset.cells.tech_details.caption" = "Technical details";
 
diff --git a/Passepartout-iOS/Scenes/ProviderPoolViewController.swift b/Passepartout-iOS/Scenes/ProviderPoolViewController.swift
index da204dae..fdf6ab1f 100644
--- a/Passepartout-iOS/Scenes/ProviderPoolViewController.swift
+++ b/Passepartout-iOS/Scenes/ProviderPoolViewController.swift
@@ -153,10 +153,16 @@ extension ProviderPoolViewController: UITableViewDataSource, UITableViewDelegate
     }
     
     func numberOfSections(in tableView: UITableView) -> Int {
+        if isShowingEmptyFavorites {
+            return 1
+        }
         return categories.count
     }
     
     func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
+        if isShowingEmptyFavorites {
+            return nil
+        }
         if categories.count == 1 && categories.first?.name == "" {
             return nil
         }
@@ -164,7 +170,17 @@ extension ProviderPoolViewController: UITableViewDataSource, UITableViewDelegate
         return model.name
     }
     
+    func tableView(_ tableView: UITableView, titleForFooterInSection section: Int) -> String? {
+        if isShowingEmptyFavorites {
+            return L10n.App.Provider.Pool.Sections.EmptyFavorites.footer
+        }
+        return nil
+    }
+    
     func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+        if isShowingEmptyFavorites {
+            return 0
+        }
         let model = categories[section]
         return model.groups.count
     }
@@ -267,4 +283,8 @@ extension ProviderPoolViewController: UITableViewDataSource, UITableViewDelegate
     private var categories: [PoolCategory] {
         return isShowingFavorites ? favoriteCategories : allCategories
     }
+    
+    private var isShowingEmptyFavorites: Bool {
+        return isShowingFavorites && favoriteGroupIds.isEmpty
+    }
 }