#import "../src-tauri/src/navigation.m"

// Exercise the AppKit event adapter deterministically; macos_smoke separately
// runs the shared history script against a real WKWebView.
@interface TestWindow : NSWindow
@end
@implementation TestWindow
- (BOOL)isKeyWindow { return YES; }
@end

@interface TestWebView : WKWebView
@property(nonatomic, strong) NSWindow *testWindow;
@property(nonatomic, strong) NSURL *testURL;
@property(nonatomic) BOOL back;
@property(nonatomic) BOOL forward;
@property(nonatomic) BOOL allowsSwipe;
@property(nonatomic) BOOL deferPermission;
@property(nonatomic, copy) void (^permission)(id, NSError *);
@property(nonatomic, strong) NSMutableArray<NSString *> *steps;
@end
@implementation TestWebView
- (NSWindow *)window { return self.testWindow; }
- (NSURL *)URL { return self.testURL; }
- (BOOL)canGoBack { return self.back; }
- (BOOL)canGoForward { return self.forward; }
- (NSPoint)convertPoint:(NSPoint)point fromView:(NSView *)view { return point; }
- (void)evaluateJavaScript:(NSString *)script completionHandler:(void (^)(id, NSError *))handler {
    if ([script containsString:@".step("]) [self.steps addObject:script];
    else if (self.deferPermission) self.permission = handler;
    else handler(@(self.allowsSwipe), nil);
}
@end

@interface TestEvent : NSEvent
@property(nonatomic, strong) NSWindow *testWindow;
@property(nonatomic) NSEventPhase testPhase;
@property(nonatomic) NSEventPhase testMomentum;
@property(nonatomic) CGFloat dx;
@property(nonatomic) CGFloat dy;
@property(nonatomic) BOOL precise;
@property(nonatomic) NSInteger trackCount;
@property(nonatomic, copy) void (^tracking)(CGFloat, NSEventPhase, BOOL, BOOL *);
@end
@implementation TestEvent
- (NSWindow *)window { return self.testWindow; }
- (NSEventPhase)phase { return self.testPhase; }
- (NSEventPhase)momentumPhase { return self.testMomentum; }
- (CGFloat)scrollingDeltaX { return self.dx; }
- (CGFloat)scrollingDeltaY { return self.dy; }
- (BOOL)hasPreciseScrollingDeltas { return self.precise; }
- (NSPoint)locationInWindow { return NSMakePoint(20, 20); }
- (void)trackSwipeEventWithOptions:(NSEventSwipeTrackingOptions)options dampenAmountThresholdMin:(CGFloat)minimum max:(CGFloat)maximum usingHandler:(void (^)(CGFloat, NSEventPhase, BOOL, BOOL *))handler {
    NSCAssert(options & NSEventSwipeTrackingLockDirection, @"Direction must be locked");
    self.trackCount++;
    self.tracking = handler;
}
@end

@interface TestNavigation : KanbanNavigation
@property(nonatomic) BOOL enabled;
@end
@implementation TestNavigation
- (BOOL)swipeTrackingEnabled { return self.enabled; }
@end

int main(void) {
    @autoreleasepool {
        [NSApplication sharedApplication];
        TestWindow *window = [[TestWindow alloc] initWithContentRect:NSMakeRect(0, 0, 600, 400) styleMask:NSWindowStyleMaskBorderless backing:NSBackingStoreBuffered defer:NO];
        TestWebView *webview = [[TestWebView alloc] initWithFrame:NSMakeRect(0, 0, 600, 400)];
        webview.testWindow = window;
        webview.testURL = [NSURL URLWithString:@"https://example.com/board"];
        webview.back = YES;
        webview.forward = YES;
        webview.allowsSwipe = YES;
        webview.steps = [NSMutableArray new];
        TestNavigation *navigation = [TestNavigation new];
        navigation.webview = webview;
        navigation.enabled = YES;
        TestEvent *(^event)(void) = ^{
            TestEvent *value = [TestEvent new];
            value.testWindow = window;
            value.testPhase = NSEventPhaseBegan;
            value.precise = YES;
            value.dx = 15;
            return value;
        };
        BOOL stop = NO;
        TestEvent *back = event();
        [navigation handleEvent:back];
        NSCAssert(back.trackCount == 1, @"A horizontal gesture must use AppKit tracking");
        back.tracking(0.5, NSEventPhaseChanged, NO, &stop);
        NSCAssert(webview.steps.count == 0, @"A partial swipe must not navigate");
        back.tracking(1, NSEventPhaseNone, YES, &stop);
        NSCAssert(webview.steps.count == 1 && [webview.steps.lastObject containsString:@"step(-1)"], @"Back must request exactly one step");
        TestEvent *forward = event();
        forward.dx = -15;
        [navigation handleEvent:forward];
        forward.tracking(-1, NSEventPhaseNone, YES, &stop);
        NSCAssert(webview.steps.count == 2 && [webview.steps.lastObject containsString:@"step(1)"], @"Forward must request exactly one step");
        TestEvent *cancelled = event();
        [navigation handleEvent:cancelled];
        cancelled.tracking(0, NSEventPhaseCancelled, YES, &stop);
        NSCAssert(webview.steps.count == 2, @"Cancelled swipes must not navigate");
        TestEvent *interrupted = event();
        [navigation handleEvent:interrupted];
        webview.allowsSwipe = NO;
        [navigation handleEvent:event()];
        interrupted.tracking(1, NSEventPhaseNone, YES, &stop);
        NSCAssert(webview.steps.count == 2, @"A new gesture must cancel the previous gesture's animation callback");

        for (NSInteger test = 0; test < 7; test++) {
            TestEvent *ignored = event();
            navigation.enabled = test != 0;
            webview.allowsSwipe = test != 1;
            webview.back = webview.forward = test != 2;
            if (test == 3) ignored.precise = NO;
            if (test == 4) ignored.dy = 30;
            if (test == 5) ignored.testMomentum = NSEventPhaseChanged;
            if (test == 6) ignored.testWindow = nil;
            NSCAssert([navigation handleEvent:ignored] == ignored && ignored.trackCount == 0, @"Non-navigation events must remain available for scrolling");
        }
        navigation.enabled = YES;
        webview.allowsSwipe = YES;
        webview.back = YES;
        webview.deferPermission = YES;
        TestEvent *stale = event();
        [navigation handleEvent:stale];
        TestEvent *ended = event();
        ended.testPhase = NSEventPhaseEnded;
        [navigation handleEvent:ended];
        webview.permission(@YES, nil);
        NSCAssert(stale.trackCount == 0, @"Late hit tests must not resurrect ended gestures");
        TestEvent *changedPage = event();
        [navigation handleEvent:changedPage];
        webview.testURL = [NSURL URLWithString:@"https://example.com/settings"];
        webview.permission(@YES, nil);
        NSCAssert(changedPage.trackCount == 0, @"Page changes must invalidate a pending gesture");
        puts("PASS: AppKit back/forward, cancelled/partial swipes, system preference, nested scroll ownership, empty history, mouse/vertical/momentum events, stale callbacks");
    }
    return 0;
}