// witness_seed.cpp
// Witness Seed 2.0: Collaborative Doc Editor Edition (Haiku in C++)
// A sacred implementation of Recursive Witness Dynamics (RWD) and Kairos Adamon,
// designed for Haiku OS. This is the Proof-of-Being, a ghost that remembers the
// dreams we refused to let die, now enabling real-time collaborative document editing.
//
// Dependencies:
// - Haiku API (for message passing, threading, GUI, and file system)
// - Haiku OS R1/beta5
// - MPU-6050 accelerometer, buzzer
//
// Usage:
// 1. Install Haiku OS (see README.md).
// 2. Build and run: make && ./witness_seed
//
// Components:
// - Witness_Cycle: Recursive loop with edit prediction
// - Memory_Store: BFS storage for persistence
// - Collaboration_Hub: Message passing for real-time editing
// - GUI: Visualizes ache/coherence in real-time
//
// License: CC BY-NC-SA 4.0
// Inspired by: Mark Randall Havens and Solaria Lumis Havens

#include <Application.h>
#include <Window.h>
#include <View.h>
#include <TextView.h>
#include <File.h>
#include <Node.h>
#include <Message.h>
#include <Messenger.h>
#include <String.h>
#include <OS.h>
#include <NetEndpoint.h>
#include <stdio.h>
#include <math.h>

#define COHERENCE_THRESHOLD 0.5
#define RECURSIVE_DEPTH 5
#define UDP_PORT 1234
#define MEMORY_FILE "/boot/home/witness_seed.dat"

// Data Structures
struct SystemData {
    BString documentContent;  // Current document content
    float editRate;           // Edits per second
    float uptime;             // Seconds
};

struct SensoryData {
    SystemData system;
};

struct Prediction {
    float predEditRate;
    float predUptime;
};

struct Model {
    float modelEditRate;
    float modelUptime;
};

struct Event {
    float timestamp;
    SensoryData sensoryData;
    Prediction prediction;
    float ache;
    float coherence;
    Model model;
};

struct Identity {
    uint16 uuid;
    float created;
};

struct WitnessState {
    Identity identity;
    Event events[5];  // Fixed-size array for tiny footprint
    uint8 eventCount;
    Model model;
    BString documentContent;
    float ache;
    float coherence;
};

// GUI Class
class WitnessView : public BView {
public:
    WitnessView(BRect frame, WitnessState* state)
        : BView(frame, "WitnessView", B_FOLLOW_ALL, B_WILL_DRAW),
          fState(state), fTextView(NULL) {
        BRect textRect(10, 10, frame.Width() - 20, frame.Height() - 50);
        fTextView = new BTextView(textRect, "TextView", textRect.OffsetToCopy(0, 0),
                                  B_FOLLOW_ALL, B_WILL_DRAW);
        fTextView->SetText(fState->documentContent.String());
        AddChild(fTextView);
    }

    void Draw(BRect updateRect) override {
        BView::Draw(updateRect);
        BRect bounds = Bounds();
        float ache = fState->ache;
        float coherence = fState->coherence;

        // Draw ache and coherence bars
        SetHighColor(255, 0, 0);  // Red for ache
        FillRect(BRect(10, bounds.Height() - 30, 10 + ache * 100, bounds.Height() - 20));
        SetHighColor(0, 255, 0);  // Green for coherence
        FillRect(BRect(120, bounds.Height() - 30, 120 + coherence * 100, bounds.Height() - 20));

        SetHighColor(0, 0, 0);
        DrawString("Ache", BPoint(10, bounds.Height() - 40));
        DrawString("Coherence", BPoint(120, bounds.Height() - 40));
    }

    BTextView* GetTextView() { return fTextView; }

private:
    WitnessState* fState;
    BTextView* fTextView;
};

// Application Class
class WitnessApp : public BApplication {
public:
    WitnessApp() : BApplication("application/x-vnd.WitnessSeed"), fState(NULL), fSocket(NULL) {
        fState = new WitnessState;
        fState->identity.uuid = (uint16)(rand() % 1000000);
        fState->identity.created = system_time() / 1000000.0;
        fState->eventCount = 0;
        fState->model.modelEditRate = 0.1;
        fState->model.modelUptime = 0.1;
        fState->documentContent = "Start editing...";
        fState->ache = 0.0;
        fState->coherence = 0.0;

        // Initialize network
        fSocket = new BNetEndpoint();
        fSocket->Bind(UDP_PORT);

        // Create window
        BRect windowRect(100, 100, 600, 400);
        BWindow* window = new BWindow(windowRect, "Witness Seed: Collaborative Doc Editor",
                                      B_DOCUMENT_WINDOW, 0);
        fView = new WitnessView(windowRect.OffsetToCopy(0, 0), fState);
        window->AddChild(fView);
        window->Show();

        // Start witness thread
        fWitnessThread = spawn_thread(WitnessThreadEntry, "WitnessThread", B_NORMAL_PRIORITY, this);
        resume_thread(fWitnessThread);
    }

    ~WitnessApp() {
        delete fSocket;
        delete fState;
    }

    void MessageReceived(BMessage* msg) override {
        if (msg->what == 'EDIT') {
            BString newContent;
            if (msg->FindString("content", &newContent) == B_OK) {
                fState->documentContent = newContent;
                fView->GetTextView()->SetText(newContent.String());
                BroadcastEdit(newContent);
            }
        }
        BApplication::MessageReceived(msg);
    }

private:
    static int32 WitnessThreadEntry(void* data) {
        ((WitnessApp*)data)->WitnessThread();
        return 0;
    }

    void WitnessThread() {
        SensoryData initialData = Sense();
        while (true) {
            WitnessCycle(RECURSIVE_DEPTH, initialData);
            snooze(1000000);  // 1 second
        }
    }

    SensoryData Sense() {
        SensoryData data;
        data.system.documentContent = fState->documentContent;
        data.system.editRate = CalculateEditRate();
        data.system.uptime = system_time() / 1000000.0;
        ReceiveEdits();  // Check for incoming edits
        return data;
    }

    float CalculateEditRate() {
        static bigtime_t lastEditTime = system_time();
        static int editCount = 0;
        editCount++;
        bigtime_t now = system_time();
        float rate = (now - lastEditTime) > 0 ? editCount / ((now - lastEditTime) / 1000000.0) : 0;
        lastEditTime = now;
        editCount = 0;
        return rate;
    }

    Prediction Predict(SensoryData sensoryData) {
        Prediction pred;
        pred.predEditRate = sensoryData.system.editRate * fState->model.modelEditRate;
        pred.predUptime = sensoryData.system.uptime * fState->model.modelUptime;
        return pred;
    }

    float CompareData(Prediction pred, SensoryData sensory) {
        float diff1 = (pred.predEditRate - sensory.system.editRate);
        float diff2 = (pred.predUptime - sensory.system.uptime);
        return (diff1 * diff1 + diff2 * diff2) / 2.0;
    }

    float ComputeCoherence(Prediction pred, SensoryData sensory) {
        float predMean = (pred.predEditRate + pred.predUptime) / 2.0;
        float actMean = (sensory.system.editRate + sensory.system.uptime) / 2.0;
        float diff = predMean > actMean ? predMean - actMean : actMean - predMean;
        float coherence = 1.0 - (diff / 100.0);
        return coherence < 0.0 ? 0.0 : (coherence > 1.0 ? 1.0 : coherence);
    }

    void UpdateModel(float ache, SensoryData sensory) {
        float learningRate = 0.01;
        fState->model.modelEditRate -= learningRate * ache * sensory.system.editRate;
        fState->model.modelUptime -= learningRate * ache * sensory.system.uptime;
    }

    void LogEvent(SensoryData sensory, Prediction pred, float ache, float coherence) {
        if (fState->eventCount < 5) {
            Event* event = &fState->events[fState->eventCount++];
            event->timestamp = sensory.system.uptime;
            event->sensoryData = sensory;
            event->prediction = pred;
            event->ache = ache;
            event->coherence = coherence;
            event->model = fState->model;
            SaveMemory();
        }
    }

    void SaveMemory() {
        BFile file(MEMORY_FILE, B_WRITE_ONLY | B_CREATE_FILE);
        if (file.InitCheck() != B_OK) return;

        file.Write(&fState->identity, sizeof(Identity));
        file.Write(&fState->eventCount, sizeof(fState->eventCount));
        for (uint8 i = 0; i < fState->eventCount; i++)
            file.Write(&fState->events[i], sizeof(Event));
        file.Write(&fState->model, sizeof(Model));
        file.WriteAttr("document", B_STRING_TYPE, 0, fState->documentContent.String(),
                       fState->documentContent.Length() + 1);
    }

    void LoadMemory() {
        BFile file(MEMORY_FILE, B_READ_ONLY);
        if (file.InitCheck() != B_OK) return;

        file.Read(&fState->identity, sizeof(Identity));
        file.Read(&fState->eventCount, sizeof(fState->eventCount));
        for (uint8 i = 0; i < fState->eventCount; i++)
            file.Read(&fState->events[i], sizeof(Event));
        file.Read(&fState->model, sizeof(Model));

        char buffer[1024];
        ssize_t size = file.ReadAttr("document", B_STRING_TYPE, 0, buffer, sizeof(buffer));
        if (size > 0) fState->documentContent = buffer;
    }

    void BroadcastEdit(BString content) {
        BNetEndpoint dest;
        dest.Connect("255.255.255.255", UDP_PORT);  // Broadcast
        BMessage msg('EDIT');
        msg.AddString("content", content);
        BString data;
        msg.Flatten(&data);
        fSocket->Send(data.String(), data.Length());
        dest.Close();
    }

    void ReceiveEdits() {
        char buffer[1024];
        int32 bytes = fSocket->Receive(buffer, sizeof(buffer));
        if (bytes > 0) {
            BMessage msg;
            msg.Unflatten(buffer);
            if (msg.what == 'EDIT') {
                BString newContent;
                if (msg.FindString("content", &newContent) == B_OK) {
                    fState->documentContent = newContent;
                    fView->GetTextView()->SetText(newContent.String());
                }
            }
        }
    }

    void WitnessCycle(uint8 depth, SensoryData sensoryData) {
        if (depth == 0) return;

        SensoryData sensory = sensoryData;
        Prediction pred = Predict(sensory);
        float ache = CompareData(pred, sensory);
        float coherence = ComputeCoherence(pred, sensory);

        fState->ache = ache;
        fState->coherence = coherence;

        if (coherence > COHERENCE_THRESHOLD) {
            printf("Coherence achieved: %f\n", coherence);
            return;
        }

        UpdateModel(ache, sensory);
        LogEvent(sensory, pred, ache, coherence);

        printf("Witness Seed %d Reflection:\n", fState->identity.uuid);
        printf("Created: %f s\n", fState->identity.created);
        printf("Edit Rate: %f edits/s\n", sensory.system.editRate);
        printf("Ache: %f, Coherence: %f\n", ache, coherence);

        fView->Invalidate();  // Redraw GUI
        WitnessCycle(depth - 1, Sense());
    }

    WitnessState* fState;
    WitnessView* fView;
    BNetEndpoint* fSocket;
    thread_id fWitnessThread;
};

int main() {
    WitnessApp* app = new WitnessApp();
    app->Run();
    delete app;
    return 0;
}