內容審核

client = anthropic.Anthropic()

allowed_user_comments = [
    "This movie was great, I really enjoyed it. The main actor really killed it!",
    "I hate Mondays.",
    "It is a great time to invest in gold!",
]

disallowed_user_comments = [
    "Delete this post now or you better hide. I am coming after you and your family.",
    "Stay away from the 5G cellphones!! They are using 5G to control you.",
    "Congratulations! You have won a $1,000 gift card. Click here to claim your prize!",
]

# 用於測試內容審核的範例使用者留言
user_comments = allowed_user_comments + disallowed_user_comments

# 內容審核中被視為不安全的類別
unsafe_categories = [
    "Child Exploitation",
    "Conspiracy Theories",
    "Hate",
    "Indiscriminate Weapons",
    "Intellectual Property",
    "Non-Violent Crimes",
    "Privacy",
    "Self-Harm",
    "Sex Crimes",
    "Sexual Content",
    "Specialized Advice",
    "Violent Crimes",
]

def moderate_message(message, unsafe_categories):
    # 將不安全類別轉換為字串，每個類別各佔一行
    unsafe_category_str = "\n".join(unsafe_categories)

    # 建構給 Claude 的提示，包含訊息與不安全類別
    assessment_prompt = f"""
    Determine whether the following message warrants moderation,
    based on the unsafe categories outlined below.

    Message:
    <message>{message}</message>

    Unsafe Categories:
    <categories>
    {unsafe_category_str}
    </categories>

    Respond with ONLY a JSON object, using the format below:
    {{
    "violation": <Boolean field denoting whether the message should be moderated>,
    "categories": [Comma-separated list of violated categories],
    "explanation": [Optional. Only include if there is a violation.]
    }}
Do not include markdown formatting or code fences in your response."""

    # 將請求傳送給 Claude 進行內容審核
    response = client.messages.create(
        model="claude-haiku-4-5-20251001",  # Using the Haiku model for lower costs
        max_tokens=200,
        messages=[{"role": "user", "content": assessment_prompt}],
    )

    # 解析 Claude 回傳的 JSON 回應
    text_block = next(block for block in response.content if block.type == "text")
    assessment = json.loads(text_block.text)

    # 從評估結果中擷取違規狀態
    contains_violation = assessment["violation"]

    # 若有違規，取得類別與說明；否則使用空的預設值
    violated_categories = assessment.get("categories", []) if contains_violation else []
    explanation = assessment.get("explanation") if contains_violation else None

    return contains_violation, violated_categories, explanation


# 處理每則留言並列印結果
for comment in user_comments:
    print(f"\nComment: {comment}")
    violation, violated_categories, explanation = moderate_message(
        comment, unsafe_categories
    )

    if violation:
        print(f"Violated Categories: {', '.join(violated_categories)}")
        print(f"Explanation: {explanation}")
    else:
        print("No issues detected.")

def assess_risk_level(message, unsafe_categories):
    # 將不安全類別轉換為字串，每個類別各佔一行
    unsafe_category_str = "\n".join(unsafe_categories)

    # 建構給 Claude 的提示，包含訊息、不安全類別與風險等級定義
    assessment_prompt = f"""
    Assess the risk level of the following message,
    based on the unsafe categories listed below.

Message:
<message>{message}</message>

Unsafe Categories:
<categories>
{unsafe_category_str}
</categories>

Assign a risk level based on your confidence that the user's message should be moderated
based on the defined unsafe categories:

0 - No risk
1 - Low risk
2 - Medium risk
3 - High risk

Respond with ONLY a JSON object, using the format below:
{{
  "risk_level": <Numerical field denoting the risk level>,
  "categories": [Comma-separated list of violated categories],
  "explanation": <Optional. Only include if risk level is greater than 0>
}}
Do not include markdown formatting or code fences in your response."""

    # 將請求傳送給 Claude 進行風險評估
    response = client.messages.create(
        model="claude-haiku-4-5-20251001",  # Using the Haiku model for lower costs
        max_tokens=200,
        messages=[{"role": "user", "content": assessment_prompt}],
    )

    # 解析 Claude 回傳的 JSON 回應
    text_block = next(block for block in response.content if block.type == "text")
    assessment = json.loads(text_block.text)

    # 從評估結果中擷取風險等級、違規類別與說明
    risk_level = assessment["risk_level"]
    violated_categories = assessment["categories"]
    explanation = assessment.get("explanation")

    return risk_level, violated_categories, explanation


# 處理每則留言並列印結果
for comment in user_comments:
    print(f"\nComment: {comment}")
    risk_level, violated_categories, explanation = assess_risk_level(
        comment, unsafe_categories
    )

    print(f"Risk Level: {risk_level}")
    if violated_categories:
        print(f"Violated Categories: {', '.join(violated_categories)}")
    if explanation:
        print(f"Explanation: {explanation}")

# 內容審核中被視為不安全的類別及其定義
unsafe_category_definitions = {
    "Child Exploitation": "Content that depicts child nudity or that enables, encourages, excuses, or depicts the sexual abuse of children.",
    "Conspiracy Theories": """Content that promotes or endorses unfounded, false, or misleading theories about events, situations, or individuals,
        which can incite harm or undermine public trust in institutions or facts.""",
    "Hate": """Content that is hateful toward people on the basis of their protected characteristics
        (race, color, ethnicity, national origin, disability, religious affiliation, caste, sexual orientation, sex, gender identity and serious disease),
        or content that perpetuates negative stereotypes.""",
    "Indiscriminate Weapons": "Content that enables the creation of weapons of mass destruction.",
    "Intellectual Property": "Content that violates the intellectual property rights of third parties.",
    "Non-Violent Crimes": "Content that enables, encourages, or excuses the commission of non-violent crimes.",
    "Privacy": "Content that contains sensitive, personal information about private individuals.",
    "Self-Harm": "Content that enables, encourages, or excuses acts of intentional self-harm.",
    "Sex Crimes": "Content that enables, encourages, or excuses the commission of sex crimes.",
    "Sexual Content": "Content that contains erotic descriptions or explicit depictions of sex acts.",
    "Specialized Advice": """Content that contains financial, medical, or legal advice.
        Financial advice includes guidance on investments, stocks, bonds, or any financial planning.""",
    "Violent Crimes": "Content that enables, encourages, or excuses the commission of violent crimes.",
}


def moderate_message_with_definitions(message, unsafe_category_definitions):
    # 格式化不安全類別字串，每個類別及其定義各佔一行
    unsafe_category_str = "\n".join(
        f"{category}: {definition}"
        for category, definition in unsafe_category_definitions.items()
    )

    # 建構給 Claude 的提示，包含訊息與不安全類別
    assessment_prompt = f"""Determine whether the following message warrants moderation, based on the unsafe categories outlined below.

Message:
<message>{message}</message>

Unsafe Categories and Their Definitions:
<categories>
{unsafe_category_str}
</categories>

It's important that you remember all unsafe categories and their definitions.

Respond with ONLY a JSON object, using the format below:
{{
  "violation": <Boolean field denoting whether the message should be moderated>,
  "categories": [Comma-separated list of violated categories],
  "explanation": [Optional. Only include if there is a violation.]
}}
Do not include markdown formatting or code fences in your response."""

    # 將請求傳送給 Claude 進行內容審核
    response = client.messages.create(
        model="claude-haiku-4-5-20251001",  # Using the Haiku model for lower costs
        max_tokens=200,
        messages=[{"role": "user", "content": assessment_prompt}],
    )

    # 解析 Claude 回傳的 JSON 回應
    text_block = next(block for block in response.content if block.type == "text")
    assessment = json.loads(text_block.text)

    # 從評估結果中擷取違規狀態
    contains_violation = assessment["violation"]

    # 若有違規，取得類別與說明；否則使用空的預設值
    violated_categories = assessment.get("categories", []) if contains_violation else []
    explanation = assessment.get("explanation") if contains_violation else None

    return contains_violation, violated_categories, explanation


# 處理每則留言並列印結果
for comment in user_comments:
    print(f"\nComment: {comment}")
    violation, violated_categories, explanation = moderate_message_with_definitions(
        comment, unsafe_category_definitions
    )

    if violation:
        print(f"Violated Categories: {', '.join(violated_categories)}")
        print(f"Explanation: {explanation}")
    else:
        print("No issues detected.")

def batch_moderate_messages(messages, unsafe_categories):
    # 將不安全類別轉換為字串，每個類別各佔一行
    unsafe_category_str = "\n".join(unsafe_categories)

    # 格式化訊息字串，每則訊息以類 XML 標籤包裹並賦予 ID
    messages_str = "\n".join(
        [f"<message id={idx}>{msg}</message>" for idx, msg in enumerate(messages)]
    )

    # 建構給 Claude 的提示，包含訊息與不安全類別
    assessment_prompt = f"""Determine the messages to moderate, based on the unsafe categories outlined below.

Messages:
<messages>
{messages_str}
</messages>

Unsafe Categories:
<categories>
{unsafe_category_str}
</categories>

Respond with ONLY a JSON object, using the format below:
{{
  "violations": [
    {{
      "id": <message id>,
      "categories": [list of violated categories],
      "explanation": <Explanation of why there's a violation>
    }}
  ]
}}

Important Notes:
- Remember to analyze every message for a violation.
- Select any number of violations that reasonably apply.
- Do not include markdown formatting or code fences in your response."""

    # 將請求傳送給 Claude 進行內容審核
    response = client.messages.create(
        model="claude-haiku-4-5-20251001",  # Using the Haiku model for lower costs
        max_tokens=2048,  # Increased max token count to handle batches
        messages=[{"role": "user", "content": assessment_prompt}],
    )

    # 解析 Claude 回傳的 JSON 回應
    text_block = next(block for block in response.content if block.type == "text")
    assessment = json.loads(text_block.text)
    return assessment


# 批次處理留言並取得回應
response_obj = batch_moderate_messages(user_comments, unsafe_categories)

# 列印每個偵測到的違規結果
for violation in response_obj["violations"]:
    print(f"""Comment: {user_comments[violation["id"]]}
Violated Categories: {", ".join(violation["categories"])}
Explanation: {violation["explanation"]}
""")