RSS kinda works.

- ./gen_rss outputs all entries.
- tag selection is implemented, but not exposed to the user.

src/generators/rss.cpp

@@ -15,11 +15,15 @@
  */
 
 #include "rss.hpp"
+#include "files.hpp"
+#include "git.hpp"
 #include "time.hpp"
 
+#include <algorithm>
 #include <chrono>
 #include <cstdint>
 #include <cstdlib>
+#include <exception>
 #include <iostream>
 #include <ostream>
 #include <string>
@@ -29,7 +33,9 @@
 namespace FediBlock::rss
 {
 
+using std::find;
 using std::getenv;
+using std::none_of;
 using std::ostream;
 using std::string;
 using std::string_view;
@@ -74,6 +80,7 @@ void write_rss(ostream &out, const vector<entry_type> &entries,
     {
         selfurl += env;
     }
+    const string baseurl{selfurl + "/blocklist/"};
     env = getenv("REQUEST_URI");
     if (env != nullptr)
     {
@@ -91,30 +98,122 @@ void write_rss(ostream &out, const vector<entry_type> &entries,
         << R"(" rel="self" type="application/rss+xml"/>)" << '\n';
     write_line(out, 4, "title", "FediBlock: newest entries");
     write_line(out, 4, "link", blocklist_url);
-    write_line(out, 4, "description", "FediBlock: Newest entries.");
-    write_line(out,
-               4,
-               "lastBuildDate",
+    string description;
+    if (tags.empty())
+    {
+        description = "All tags.";
+    }
+    else
+    {
+        description = "Tags: ";
+    }
+    for (const auto &tag : tags)
+    {
+        if (tag == *(tags.begin()))
+        {
+            description += ", ";
+        }
+        description += tag;
+    }
+    write_line(out, 4, "description", description);
+    write_line(out, 4, "lastBuildDate",
                time::to_string(system_clock::now(), rss_time_format));
 
-    // TODO: <item>s.
+    for (const auto &entry : entries)
+    {
+        // If tags are specified and none of them match, go to the next entry.
+        if (!tags.empty())
+        {
+            // clang-format off
+            if (none_of(entry.tags.begin(), entry.tags.end(),
+                        [&tags](const auto &tag)
+                        {
+                            return find(tags.begin(), tags.end(), tag)
+                                   != tags.end();
+                        }))
+            {
+                continue;
+            }
+            // clang-format on
+        }
+
+        out << "    <item>\n";
+        write_line(out, 6, "title", entry.instance);
+        write_line(out, 6, "guid isPermaLink=\"false\"",
+                   "FediBlock: " + entry.report_time + " " + entry.instance);
+        write_line(out, 6, "pubDate",
+                   time::to_string(entry.report_time, rss_time_format));
+
+        string item_description{"<p>" + entry.description + "</p>"};
+        item_description += "<p><strong>Tags:</strong> ";
+        for (const auto &tag : entry.tags)
+        {
+            if (tag != *(entry.tags.begin()))
+            {
+                item_description += ", ";
+            }
+            item_description += tag;
+        }
+        item_description += "</p>";
+        item_description += "<p><strong>Receipts:</strong> ";
+        for (const auto &receipt : entry.receipts)
+        {
+            if (receipt != *(entry.receipts.begin()))
+            {
+                item_description += "<br>";
+            }
+            ((((item_description += "<a href=\"") += receipt) += "\">") +=
+             receipt) += "</a>";
+        }
+        item_description += "</p>";
+        if (!entry.screenshot_filepath.empty())
+        {
+            item_description += "<p><strong>Screenshot:</strong><br>";
+            ((item_description += "<a href=\"") += baseurl) +=
+                entry.screenshot_filepath;
+            item_description += "\"><img src=\"";
+            (item_description += baseurl) += entry.screenshot_filepath;
+            (item_description += R"(" height="100"></a></p>)") += '\n';
+        }
+        write_line(out, 6, "description",
+                   "<![CDATA[" + item_description + "]]>");
+
+        out << "    </item>\n";
+    }
 
     out << "  </channel>\n</rss>\n";
 }
 
 } // namespace FediBlock::rss
 
+using std::cerr;
 using std::cout;
+using std::exception;
 using std::string_view;
 using std::vector;
 
+using namespace FediBlock;
 using namespace FediBlock::rss;
 
 int main(int argc, char *argv[])
 {
     const vector<string_view> args(argv, argv + argc);
 
-    write_rss(cout, {}, {});
+    git_libgit2_init();
+
+    try
+    {
+        git::clone();
+        const auto entries{files::read_json_files()};
+        write_rss(cout, entries, {});
+    }
+    catch (const exception &e)
+    {
+        cerr << "Error: " << e.what() << '\n';
+    }
+
+    files::remove_tmpdir();
+    git_libgit2_shutdown();
 
     return 0;
 }

src/generators/rss.hpp

@@ -52,7 +52,8 @@ void write_line(ostream &out, uint8_t spaces, string_view rsstag,
  *
  *  @param  out     The ostream to use for output.
  *  @param  entries The entries to write.
- *  @param  tags    Only write entries with these tags (logical or).
+ *  @param tags     Only write entries with these tags (logical or). An empty
+ *                  vector selects all tags.
  *
  *  @since  0.2.0
  */