From 7f23b6b2d927aba2d9b68b417ea3af37f2dc567a Mon Sep 17 00:00:00 2001
From: Jackson Harper <jacksonh@gmail.com>
Date: Wed, 1 Nov 2023 23:19:29 +0800
Subject: [PATCH] Add downloaded filter

---
 .../App/Views/Home/HomeFeedDisplayText.swift     |  2 ++
 .../App/Views/Home/HomeFeedViewModel.swift       |  8 ++++++--
 .../Sources/Models/LinkedItemFilter.swift        | 16 ++++++++++++++++
 3 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/apple/OmnivoreKit/Sources/App/Views/Home/HomeFeedDisplayText.swift b/apple/OmnivoreKit/Sources/App/Views/Home/HomeFeedDisplayText.swift
index 745d37a77..ebd765dc0 100644
--- a/apple/OmnivoreKit/Sources/App/Views/Home/HomeFeedDisplayText.swift
+++ b/apple/OmnivoreKit/Sources/App/Views/Home/HomeFeedDisplayText.swift
@@ -11,6 +11,8 @@ extension LinkedItemFilter {
       return LocalText.readLaterGeneric
     case .newsletters:
       return LocalText.newslettersGeneric
+    case .downloaded:
+      return "Downloaded"
     case .feeds:
       return "Feeds"
     case .recommended:
diff --git a/apple/OmnivoreKit/Sources/App/Views/Home/HomeFeedViewModel.swift b/apple/OmnivoreKit/Sources/App/Views/Home/HomeFeedViewModel.swift
index 5c33f409e..1f34b82c9 100644
--- a/apple/OmnivoreKit/Sources/App/Views/Home/HomeFeedViewModel.swift
+++ b/apple/OmnivoreKit/Sources/App/Views/Home/HomeFeedViewModel.swift
@@ -203,7 +203,8 @@ import Views
       await group.waitForAll()
     }
 
-    let shouldSearch = items.count < 1 || isRefresh
+    let filter = LinkedItemFilter(rawValue: appliedFilter)
+    let shouldSearch = items.count < 1 || isRefresh && filter != LinkedItemFilter.downloaded
     if shouldSearch {
       await loadSearchQuery(dataService: dataService, isRefresh: isRefresh)
     } else {
@@ -220,7 +221,10 @@ import Views
     isLoading = true
     showLoadingBar = true
 
-    await loadSearchQuery(dataService: dataService, isRefresh: isRefresh)
+    let filter = LinkedItemFilter(rawValue: appliedFilter)
+    if filter != LinkedItemFilter.downloaded {
+      await loadSearchQuery(dataService: dataService, isRefresh: isRefresh)
+    }
 
     isLoading = false
     showLoadingBar = false
diff --git a/apple/OmnivoreKit/Sources/Models/LinkedItemFilter.swift b/apple/OmnivoreKit/Sources/Models/LinkedItemFilter.swift
index be54b26ef..686d5aab5 100644
--- a/apple/OmnivoreKit/Sources/Models/LinkedItemFilter.swift
+++ b/apple/OmnivoreKit/Sources/Models/LinkedItemFilter.swift
@@ -5,6 +5,7 @@ public enum LinkedItemFilter: String, CaseIterable {
   case feeds
   case readlater
   case newsletters
+  case downloaded
   case recommended
   case all
   case archived
@@ -22,6 +23,8 @@ public extension LinkedItemFilter {
       return "label:RSS"
     case .readlater:
       return "in:library"
+    case .downloaded:
+      return ""
     case .newsletters:
       return "in:inbox label:Newsletter"
     case .recommended:
@@ -73,6 +76,19 @@ public extension LinkedItemFilter {
       return NSCompoundPredicate(andPredicateWithSubpredicates: [
         undeletedPredicate, notInArchivePredicate, nonNewsletterLabelPredicate, nonRSSPredicate
       ])
+    case .downloaded:
+      // include pdf only
+      let hasHTMLContent = NSPredicate(
+        format: "htmlContent.length > 0"
+      )
+      let isPDFPredicate = NSPredicate(
+        format: "%K == %@", #keyPath(LinkedItem.contentReader), "PDF"
+      )
+      let localPDFURL = NSPredicate(
+        format: "localPDF.length > 0"
+      )
+      let downloadedPDF = NSCompoundPredicate(andPredicateWithSubpredicates: [isPDFPredicate, localPDFURL])
+      return NSCompoundPredicate(orPredicateWithSubpredicates: [hasHTMLContent, downloadedPDF])
     case .newsletters:
       // non-archived or deleted items with the Newsletter label
       let newsletterLabelPredicate = NSPredicate(