app.py

import gradio as gr
import torch
import numpy as np
from transformers import pipeline, RobertaForSequenceClassification, RobertaTokenizer
from motif_tagging import detect_motifs
import re

# --- SST Sentiment Model ---
sst_pipeline = pipeline("sentiment-analysis", model="distilbert-base-uncased-finetuned-sst-2-english")

# --- Abuse Model ---
model_name = "SamanthaStorm/autotrain-jlpi4-mllvp"
model = RobertaForSequenceClassification.from_pretrained(model_name)
tokenizer = RobertaTokenizer.from_pretrained(model_name)

LABELS = [
    "blame shifting", "contradictory statements", "control", "dismissiveness",
    "gaslighting", "guilt tripping", "insults", "obscure language",
    "projection", "recovery phase", "threat"
]

THRESHOLDS = {
    "blame shifting": 0.3, "contradictory statements": 0.32, "control": 0.48, "dismissiveness": 0.45,
    "gaslighting": 0.30, "guilt tripping": 0.20, "insults": 0.34, "obscure language": 0.25,
    "projection": 0.35, "recovery phase": 0.25, "threat": 0.25
}

PATTERN_WEIGHTS = {
    "gaslighting": 1.3, "control": 1.2, "dismissiveness": 0.8,
    "blame shifting": 0.8, "contradictory statements": 0.75
}

RISK_STAGE_LABELS = {
    1: "🌀 Risk Stage: Tension-Building\nThis message reflects rising emotional pressure or subtle control attempts.",
    2: "🔥 Risk Stage: Escalation\nThis message includes direct or aggressive patterns, suggesting active harm.",
    3: "🌧️ Risk Stage: Reconciliation\nThis message reflects a reset attempt—apologies or emotional repair without accountability.",
    4: "🌸 Risk Stage: Calm / Honeymoon\nThis message appears supportive but may follow prior harm, minimizing it."
}

ESCALATION_QUESTIONS = [
    ("Partner has access to firearms or weapons", 4),
    ("Partner threatened to kill you", 3),
    ("Partner threatened you with a weapon", 3),
    ("Partner has ever choked you, even if you considered it consensual at the time", 4),
    ("Partner injured or threatened your pet(s)", 3),
    ("Partner has broken your things, punched or kicked walls, or thrown things ", 2),
    ("Partner forced or coerced you into unwanted sexual acts", 3),
    ("Partner threatened to take away your children", 2),
    ("Violence has increased in frequency or severity", 3),
    ("Partner monitors your calls/GPS/social media", 2)
]

def detect_contradiction(message):
    patterns = [
        (r"\b(i love you).{0,15}(i hate you|you ruin everything)", re.IGNORECASE),
        (r"\b(i’m sorry).{0,15}(but you|if you hadn’t)", re.IGNORECASE),
        (r"\b(i’m trying).{0,15}(you never|why do you)", re.IGNORECASE),
        (r"\b(do what you want).{0,15}(you’ll regret it|i always give everything)", re.IGNORECASE),
        (r"\b(i don’t care).{0,15}(you never think of me)", re.IGNORECASE),
        (r"\b(i guess i’m just).{0,15}(the bad guy|worthless|never enough)", re.IGNORECASE)
    ]
    return any(re.search(p, message, flags) for p, flags in patterns)

def get_risk_stage(patterns, sentiment):
    if "threat" in patterns or "insults" in patterns:
        return 2
    elif "recovery phase" in patterns:
        return 3
    elif "control" in patterns or "guilt tripping" in patterns:
        return 1
    elif sentiment == "supportive" and any(p in patterns for p in ["projection", "dismissiveness"]):
        return 4
    return 1

def generate_risk_snippet(abuse_score, top_label, escalation_score):
    if abuse_score >= 85 or escalation_score >= 16:
        risk_level = "high"
    elif abuse_score >= 60 or escalation_score >= 8:
        risk_level = "moderate"
    else:
        risk_level = "low"

    pattern_label = top_label.split(" – ")[0]
    pattern_score = top_label.split(" – ")[1] if " – " in top_label else ""

    WHY_FLAGGED = {
        "control": "This message may reflect efforts to restrict someone’s autonomy, even if it's framed as concern or care.",
        "gaslighting": "This message could be manipulating someone into questioning their perception or feelings.",
        "dismissiveness": "This message may include belittling, invalidating, or ignoring the other person’s experience.",
        "insults": "Direct insults often appear in escalating abusive dynamics and can erode emotional safety.",
        "threat": "This message includes threatening language, which is a strong predictor of harm.",
        "blame shifting": "This message may redirect responsibility to avoid accountability, especially during conflict.",
        "guilt tripping": "This message may induce guilt in order to control or manipulate behavior.",
        "recovery phase": "This message may be part of a tension-reset cycle, appearing kind but avoiding change.",
        "projection": "This message may involve attributing the abuser’s own behaviors to the victim.",
        "default": "This message contains language patterns that may affect safety, clarity, or emotional autonomy."
    }

    explanation = WHY_FLAGGED.get(pattern_label.lower(), WHY_FLAGGED["default"])

    base = f"

🛑 Risk Level: {risk_level.capitalize()}
"
    base += f"This message shows strong indicators of **{pattern_label}**. "

    if risk_level == "high":
        base += "The language may reflect patterns of emotional control, even when expressed in soft or caring terms.
"
    elif risk_level == "moderate":
        base += "There are signs of emotional pressure or indirect control that may escalate if repeated.
"
    else:
        base += "The message does not strongly indicate abuse, but it's important to monitor for patterns.
"

    base += f"
💡 *Why this might be flagged:*
{explanation}
"
    base += f"
Detected Pattern: **{pattern_label} ({pattern_score})**
"
    base += "🧠 You can review the pattern in context. This tool highlights possible dynamics—not judgments."

    return base