/**

 * 

 */

package org.symbian.tools.tmw.debug.internal.model;

import java.util.Collection;

import org.chromium.debug.core.ChromiumDebugPlugin;

import org.chromium.debug.core.model.BreakpointMap;

import org.chromium.debug.core.model.BreakpointSynchronizer.BreakpointHelper.CreateCallback;

import org.chromium.debug.core.model.ChromiumLineBreakpoint;

import org.chromium.debug.core.model.DebugTargetImpl;

import org.chromium.debug.core.model.VProjectWorkspaceBridge;

import org.chromium.debug.core.model.VmResourceId;

import org.chromium.debug.core.model.WorkspaceBridge.BreakpointHandler;

import org.chromium.sdk.Breakpoint;

import org.chromium.sdk.JavascriptVm;

import org.chromium.sdk.SyncCallback;

import org.eclipse.core.resources.IFile;

import org.eclipse.core.resources.IMarkerDelta;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.debug.core.model.IBreakpoint;

import org.symbian.tools.tmw.debug.internal.launch.WRTProjectWorkspaceBridge;

import org.symbian.tools.tmw.previewer.PreviewerPlugin;

public final class WorkspaceBreakpointHandler implements BreakpointHandler {

	private final BreakpointMap.InTargetMap breakpointInTargetMap = new BreakpointMap.InTargetMap();

	private final DebugTargetImpl debugTarget;

		this.debugTarget = debugTarget;

	}

    public void breakpointAdded(IBreakpoint breakpoint) {

        ChromiumLineBreakpoint lineBreakpoint = tryCastBreakpoint(breakpoint);

        if (lineBreakpoint == null) {

            return;

        }

        if (ChromiumLineBreakpoint.getIgnoreList().contains(breakpoint)) {

            return;

        }

        if (!lineBreakpoint.isEnabled()) {

            return;

        }

        IFile file = (IFile) lineBreakpoint.getMarker().getResource();

        VmResourceId vmResourceId;

        try {

            vmResourceId = findVmResourceIdFromWorkspaceFile(file);

        } catch (CoreException e) {

            ChromiumDebugPlugin.log(new Exception("Failed to resolve script for the file " + file, e)); //$NON-NLS-1$

            return;

        }

        if (vmResourceId == null) {

            // Might be a script from a different debug target

            return;

        }

        createBreakpointOnRemote(lineBreakpoint, vmResourceId, null, null);

    }

    public void breakpointChanged(IBreakpoint breakpoint, IMarkerDelta delta) {

        ChromiumLineBreakpoint lineBreakpoint = tryCastBreakpoint(breakpoint);

        if (lineBreakpoint == null) {

            return;

        }

        if (ChromiumLineBreakpoint.getIgnoreList().contains(lineBreakpoint)) {

            return;

        }

        Breakpoint sdkBreakpoint = breakpointInTargetMap.getSdkBreakpoint(lineBreakpoint);

        if (sdkBreakpoint == null) {

            return;

        }

        try {

            ChromiumLineBreakpoint.Helper.updateOnRemote(sdkBreakpoint, lineBreakpoint);

        } catch (RuntimeException e) {

            ChromiumDebugPlugin.log(new Exception("Failed to change breakpoint in " + //$NON-NLS-1$

                    getTargetNameSafe(), e));

        }

    }

    public void breakpointRemoved(IBreakpoint breakpoint, IMarkerDelta delta) {

        ChromiumLineBreakpoint lineBreakpoint = tryCastBreakpoint(breakpoint);

        if (lineBreakpoint == null) {

            return;

        }

        if (ChromiumLineBreakpoint.getIgnoreList().contains(lineBreakpoint)) {

            return;

        }

        Breakpoint sdkBreakpoint = breakpointInTargetMap.getSdkBreakpoint(lineBreakpoint);

        if (sdkBreakpoint == null) {

            return;

        }

        try {

            if (!breakpoint.isEnabled()) {

            return;

            }

        } catch (CoreException e) {

            ChromiumDebugPlugin.log(e);

            return;

        }

        JavascriptVm.BreakpointCallback callback = new JavascriptVm.BreakpointCallback() {

            public void failure(String errorMessage) {

                ChromiumDebugPlugin.log(new Exception("Failed to remove breakpoint in " + //$NON-NLS-1$

                        getTargetNameSafe() + ": " + errorMessage)); //$NON-NLS-1$

            }

            public void success(Breakpoint breakpoint) {

            }

        };

        try {

            sdkBreakpoint.clear(callback, null);

        } catch (RuntimeException e) {

            ChromiumDebugPlugin.log(new Exception("Failed to remove breakpoint in " + //$NON-NLS-1$

                    getTargetNameSafe(), e));

        }

        breakpointInTargetMap.remove(lineBreakpoint);

    }

    public void breakpointsHit(Collection<? extends Breakpoint> breakpointsHit) {

        if (breakpointsHit.isEmpty()) {

            return;

        }

        for (Breakpoint sdkBreakpoint : breakpointsHit) {

            ChromiumLineBreakpoint uiBreakpoint = breakpointInTargetMap.getUiBreakpoint(sdkBreakpoint);

            if (uiBreakpoint != null) {

                uiBreakpoint.setIgnoreCount(-1); // reset ignore count as we've hit it

            }

        }

    }

    public void createBreakpointOnRemote(final ChromiumLineBreakpoint lineBreakpoint, final VmResourceId vmResourceId,

            final CreateCallback createCallback, SyncCallback syncCallback) {

        try {

            ChromiumLineBreakpoint.Helper.CreateOnRemoveCallback callback = new ChromiumLineBreakpoint.Helper.CreateOnRemoveCallback() {

                public void failure(String errorMessage) {

                    if (createCallback == null) {

                        ChromiumDebugPlugin.logError(errorMessage);

                    } else {

                        createCallback.failure(new Exception(errorMessage));

                    }

                }

                public void success(Breakpoint breakpoint) {

                    breakpointInTargetMap.add(breakpoint, lineBreakpoint);

                    if (createCallback != null) {

                        createCallback.success();

                    }

                }

            };

            ChromiumLineBreakpoint.Helper.createOnRemote(lineBreakpoint, vmResourceId, debugTarget, callback,

                    syncCallback);

        } catch (CoreException e) {

            ChromiumDebugPlugin.log(new Exception("Failed to create breakpoint in " + //$NON-NLS-1$

                    getTargetNameSafe(), e));

        }

    }

    private VmResourceId findVmResourceIdFromWorkspaceFile(IFile resource) throws CoreException {

        return VmResourceId.forName(PreviewerPlugin.getDefault().getHttpPreviewer().getHttpUrl(resource));

    }

    private String getTargetNameSafe() {

        try {

            return debugTarget.getLaunch().getLaunchConfiguration().getName();

        } catch (RuntimeException e) {

          return "<unknown>"; //$NON-NLS-1$

        }

    }

    public boolean supportsBreakpoint(IBreakpoint breakpoint) {

		return (WRTProjectWorkspaceBridge.DEBUG_MODEL_ID.equals(breakpoint

				.getModelIdentifier()) || VProjectWorkspaceBridge.DEBUG_MODEL_ID

				.equals(breakpoint.getModelIdentifier()))

				&& !debugTarget.isDisconnected();

	}

    public ChromiumLineBreakpoint tryCastBreakpoint(IBreakpoint breakpoint) {

        if (!supportsBreakpoint(breakpoint)) {

            return null;

        }

        if (breakpoint instanceof ChromiumLineBreakpoint == false) {

            return null;

        }

        return (ChromiumLineBreakpoint) breakpoint;

    }

}