Implemement Actor information tab

This class still has improvements to be made, but it works and I am
satisfied with it!

4 files changed, 103 insertions, 3 deletions

diff --git a/src/archive/base_archive.cpp b/src/archive/base_archive.cpp
index 47cadf2..472abb1 100644
--- a/src/archive/base_archive.cpp
+++ b/src/archive/base_archive.cpp
@@ -15,3 +15,7 @@ Archive::Archive(const QString& filename) : main_filename(filename) {}
 const QString Archive::get_instance_address() {
     return "";
 }
+
+APActor* Archive::get_main_actor() {
+    return nullptr;
+}
diff --git a/src/archive/base_archive.h b/src/archive/base_archive.h
index bf43306..27259b3 100644
--- a/src/archive/base_archive.h
+++ b/src/archive/base_archive.h
@@ -1,10 +1,10 @@
 #pragma once
-
+#include "src/activitypub/apactivity.h"
+#include "src/activitypub/apactor.h"
+#include "src/types.h"
 #include <QString>
 #include <QListWidget>
 #include <variant>
-#include "src/activitypub/apactivity.h"
-#include "src/types.h"
 
 enum ArchiveType {
     MASTODON
@@ -35,6 +35,9 @@ public:
 
     virtual void update_status_list(ViewStatusTypes allowed_types, QListWidget *parent) = 0;
     virtual APActivity* get_activity(ArchiveItemRef index, Hinting_t hinting) = 0;
+    // Get the Actor that represents the data export, the user who's account data has been exported.
+    // Return nullptr if the Actor cannot be retrieved
+    virtual APActor* get_main_actor();
     virtual const QString get_html_status_text(ArchiveItemRef status_index) = 0;
     virtual const QString get_instance_address();
 
diff --git a/src/archive/mastodon.cpp b/src/archive/mastodon.cpp
index 781f928..121c366 100644
--- a/src/archive/mastodon.cpp
+++ b/src/archive/mastodon.cpp
@@ -355,6 +355,96 @@ const QString MastodonArchive::get_html_status_text(ArchiveItemRef index) {
     return text;
 }
 
+APActor* MastodonArchive::get_main_actor() {
+    // Avoid recreating the Actor each time by caching it
+    if (actor) return actor;
+
+    // First, get the file
+    QString actor_filepath = archive_root_dir.filePath("actor.json");
+    if (not QFile::exists(actor_filepath)) return nullptr;
+    QFile actor_file(actor_filepath);
+
+    if (!actor_file.open(QIODevice::ReadOnly | QIODevice::Text))
+        return nullptr;
+
+    QJsonParseError json_error;
+    QJsonDocument actor_json_document = QJsonDocument::fromJson(actor_file.readAll(), &json_error);
+    actor_file.close();
+
+    if (json_error.error != QJsonParseError::NoError or actor_json_document.isNull() or actor_json_document.isEmpty() or not actor_json_document.isObject())
+        return nullptr;
+
+    // Second, now check the JSON
+    QJsonObject actor_json(actor_json_document.object());
+
+    // Do some more throughful checks to make sure that the JSON is actually valid
+    // Please tell me if actor is not "actor.json" (also, i should instead first read actor.json to know the outbox file location, not the other way around as i've been doing since the beginning). Indeed, the checks are also quite random
+    if (not json_check_item(actor_json.value("@context"), "https://www.w3.org/ns/activitystreams") or actor_json.value("outbox").toString() != "outbox.json")
+        return nullptr;
+
+    // Third, now parse the JSON :-D
+    {
+        APActorFields obj_fields;
+        // If the key doesn't exist then toString() will return a null QString
+        obj_fields.url = actor_json.value("id").toString();
+        obj_fields.username = actor_json.value("preferredUsername").toString();
+        obj_fields.display_name = actor_json.value("name").toString();
+        obj_fields.summary = actor_json.value("summary").toString();
+        obj_fields.manuallyApprovesFollowers = actor_json.value("manuallyApprovesFollowers").toBool();
+        obj_fields.discoverable = actor_json.value("discoverable").toBool();
+        obj_fields.joined_date = actor_json.value("published").toString();
+
+        if (actor_json.value("attachment").isArray()) {
+            QJsonArray table = actor_json.value("attachment").toArray();
+            for (auto pair_obj : table) {
+                QJsonObject pair = pair_obj.toObject();
+
+                // Not a PropertyValue, so better not continue with this pair (just in case it represents something else)
+                if (pair.value("type").toString() != "PropertyValue") {
+                    qDebug() << "not a PropertyValue!";
+                    continue;
+                }
+
+                if (pair.contains("name") && pair.contains("value")) {
+                    obj_fields.keys.append(pair.value("name").toString());
+                    obj_fields.values.append(pair.value("value").toString());
+                }
+            }
+        }
+
+        if (actor_json.value("alsoKnownAs").isArray()) {
+            QJsonArray list = actor_json.value("alsoKnownAs").toArray();
+            for (auto id_obj : list)
+                obj_fields.also_known_as.append(id_obj.toString());
+        }
+
+        if (actor_json.value("icon").isObject()) {
+            APAttachmentFields att_fields;
+            QJsonObject attachment = actor_json.value("icon").toObject();
+
+            att_fields.media_type = attachment["mediaType"].toString();
+            att_fields.path = archive_root_dir.absoluteFilePath(attachment["url"].toString());
+
+            obj_fields.avatar = new APAttachment(att_fields);
+        }
+
+        if (actor_json.value("image").isObject()) {
+            APAttachmentFields att_fields;
+            QJsonObject attachment = actor_json.value("image").toObject();
+            att_fields.media_type = attachment["mediaType"].toString();
+            att_fields.path = archive_root_dir.absoluteFilePath(attachment["url"].toString());
+            obj_fields.header = new APAttachment(att_fields);
+        }
+
+        actor = new APActor(obj_fields);
+
+        // TODO: query type. it seems to be always "Person", but maybe if the account is a bot, it changes?
+        // The code also currently ignores possible featured tags and users
+    }
+
+    return actor;
+}
+
 void MastodonArchive::find_attachment_dir(QString example_attachment) {
     // Find the root directory name of the attachment
     QString root_name = example_attachment.split('/', Qt::SkipEmptyParts)[0];
diff --git a/src/archive/mastodon.h b/src/archive/mastodon.h
index 75bc7ec..f148047 100644
--- a/src/archive/mastodon.h
+++ b/src/archive/mastodon.h
@@ -3,6 +3,7 @@
 #include "src/archive/base_archive.h"
 #include "src/activitypub/fields.h"
 #include "src/activitypub/apactivity.h"
+#include "src/activitypub/apactor.h"
 #include "src/types.h"
 
 #include <QJsonDocument>
@@ -19,6 +20,7 @@ public:
 
     void update_status_list(ViewStatusTypes allowed_types, QListWidget *parent);
     APActivity* get_activity(ArchiveItemRef index, Hinting_t hinting = {});
+    APActor* get_main_actor();
     const QString get_html_status_text(ArchiveItemRef status_index);
     const QString get_instance_address();
 private:
@@ -28,6 +30,7 @@ private:
 
     QJsonObject *outbox_json = nullptr;
     QJsonArray *outbox_items = nullptr;
+    APActor* actor = nullptr;
 
     bool is_status_type_allowed(StatusType status_type, ViewStatusTypes allowed_types);
     StatusType get_status_type(QJsonObject obj);