Define Cockatrice as an editor/handler for .cod files and cockatrice:// protocol on all platforms (#6775)

* [Application] Add single instance guard and mime types.

Took 2 hours 39 minutes

Took 18 minutes

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Took 11 seconds

* Rework

Took 30 minutes


Took 50 seconds

* Only enforce single instance if launched with arguments.

Took 5 minutes

* Prototype intents

Took 53 minutes

Took 6 seconds

* Connect/disconnect and join game/room intents.

Took 3 hours 14 minutes

Took 2 seconds

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* Fix include.

Took 1 minute


Took 23 seconds

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* Mac handling.

Took 10 minutes

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Took 3 minutes

* Lint.

Took 3 minutes

* Rebase.

Took 3 minutes

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* Implement UrlSchemeEventFilter

Took 10 minutes

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* Qt Moc

Took 3 minutes

* Modern PList.

Took 21 minutes

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* Debug output.

Took 6 minutes

Took 19 minutes

* Watch file:// prefix.

Took 15 minutes

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* Better handler.

Took 6 minutes

* Don't store reference in member

Took 5 minutes

* Move impl to cpp, fix lifetime issues.

Took 11 minutes

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* Better single-instance handoff, url intent harded

copy game link context-menu
Polish for installers

Took 35 minutes

Took 8 seconds

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Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

cockatrice/src/interface/intents/intent.cpp

@@ -0,0 +1,48 @@
+#include "intent.h"
+
+Intent::Intent(QObject *parent) : QObject(parent)
+{
+    // An intent is done as soon as it reports success or failure. Deleting it
+    // also tears down its dependency chain and disconnects any signal wiring.
+    connect(this, &Intent::finished, this, &QObject::deleteLater);
+    connect(this, &Intent::failed, this, &QObject::deleteLater);
+}
+
+Intent::~Intent() = default;
+
+void Intent::execute()
+{
+    if (checkPrecondition()) {
+        onPreconditionSatisfied();
+    } else {
+        onPreconditionNotSatisfied();
+    }
+}
+
+void Intent::runDependency(Intent *dependency)
+{
+    dependency->setParent(this);
+    connect(dependency, &Intent::finished, this, [this]() {
+        // Re-check after dependency finishes
+        this->execute();
+    });
+    connect(dependency, &Intent::failed, this, &Intent::failed);
+
+    dependency->execute();
+}
+
+void Intent::emitFinished()
+{
+    if (!completed) {
+        completed = true;
+        emit finished();
+    }
+}
+
+void Intent::emitFailed(const QString &reason)
+{
+    if (!completed) {
+        completed = true;
+        emit failed(reason);
+    }
+}