From 6efae12ba0cea46637218029213ffdce6190c8a1 Mon Sep 17 00:00:00 2001
From: hius07 <62179190+hius07@users.noreply.github.com>
Date: Wed, 9 Apr 2025 14:01:04 +0300
Subject: [PATCH] OPDSBrowser: analyze acquisition mimetype (#13535)

To handle non-standard relations.
Closes #13520.
---
 plugins/opds.koplugin/opdsbrowser.lua | 32 ++++++++++++++++++---------
 1 file changed, 22 insertions(+), 10 deletions(-)

diff --git a/plugins/opds.koplugin/opdsbrowser.lua b/plugins/opds.koplugin/opdsbrowser.lua
index 985c8c1ed..f09a8bd36 100644
--- a/plugins/opds.koplugin/opdsbrowser.lua
+++ b/plugins/opds.koplugin/opdsbrowser.lua
@@ -37,11 +37,17 @@ local OPDSBrowser = Menu:extend{
     search_template_type = "application/atom%+xml",
     acquisition_rel      = "^http://opds%-spec%.org/acquisition",
     borrow_rel           = "http://opds-spec.org/acquisition/borrow",
-    image_rel            = "http://opds-spec.org/image",
-    image_rel_alt        = "http://opds-spec.org/cover", -- ManyBooks.net, not in spec
-    thumbnail_rel        = "http://opds-spec.org/image/thumbnail",
-    thumbnail_rel_alt    = "http://opds-spec.org/thumbnail", -- ManyBooks.net, not in spec
     stream_rel           = "http://vaemendis.net/opds-pse/stream",
+    image_rel            = {
+        ["http://opds-spec.org/image"] = true,
+        ["http://opds-spec.org/cover"] = true, -- ManyBooks.net, not in spec
+        ["x-stanza-cover-image"] = true,
+    },
+    thumbnail_rel        = {
+        ["http://opds-spec.org/image/thumbnail"] = true,
+        ["http://opds-spec.org/thumbnail"] = true, -- ManyBooks.net, not in spec
+        ["x-stanza-cover-image-thumbnail"] = true,
+    },
 
     root_catalog_title    = nil,
     root_catalog_username = nil,
@@ -386,11 +392,11 @@ function OPDSBrowser:genItemTableFromCatalog(catalog, item_url)
     end
     item_table.hrefs = hrefs
 
-    for _, entry in ipairs(feed.entry or {}) do
+    for __, entry in ipairs(feed.entry or {}) do
         local item = {}
         item.acquisitions = {}
         if entry.link then
-            for __, link in ipairs(entry.link) do
+            for ___, link in ipairs(entry.link) do
                 local link_href = build_href(link.href)
                 if link.type and link.type:find(self.catalog_type)
                         and (not link.rel
@@ -435,10 +441,16 @@ function OPDSBrowser:genItemTableFromCatalog(catalog, item_url)
                                 last_read = last_read and last_read > 0 and last_read or nil
                             })
                         end
-                    elseif link.rel == self.thumbnail_rel or link.rel == self.thumbnail_rel_alt then
+                    elseif self.thumbnail_rel[link.rel] then
                         item.thumbnail = link_href
-                    elseif link.rel == self.image_rel or link.rel == self.image_rel_alt then
+                    elseif self.image_rel[link.rel] then
                         item.image = link_href
+                    elseif link.rel ~= "alternate" and DocumentRegistry:hasProvider(nil, link.type) then
+                        table.insert(item.acquisitions, {
+                            type  = link.type,
+                            href  = link_href,
+                            title = link.title,
+                        })
                     end
                     -- This statement grabs the catalog items that are
                     -- indicated by title="pdf" or whose type is
@@ -459,7 +471,7 @@ function OPDSBrowser:genItemTableFromCatalog(catalog, item_url)
                 end
             end
         end
-        local title = "Unknown"
+        local title = _("Unknown")
         if type(entry.title) == "string" then
             title = entry.title
         elseif type(entry.title) == "table" then
@@ -468,7 +480,7 @@ function OPDSBrowser:genItemTableFromCatalog(catalog, item_url)
             end
         end
         item.text = title
-        local author = "Unknown Author"
+        local author = _("Unknown Author")
         if type(entry.author) == "table" and entry.author.name then
             author = entry.author.name
             if type(author) == "table" then