app/api/fact_check.py

@@ -1,11 +1,13 @@
 from fastapi import APIRouter, HTTPException
-from pydantic import BaseModel, Field, HttpUrl, validator, ConfigDict
-from typing import Dict, List, Optional, Union
-import requests
-from enum import Enum
-from datetime import datetime
 import json
-from app.config import GOOGLE_FACT_CHECK_API_KEY, GOOGLE_FACT_CHECK_BASE_URL
+from datetime import datetime
+from typing import Dict
+
+from app.config import GOOGLE_API_KEY, GOOGLE_FACT_CHECK_BASE_URL
+from app.models.fact_check_models import (
+    FactCheckResponse, FactCheckRequest, Claim, ErrorResponse
+)
+from app.websites.fact_checker_website import fetch_fact_checks, get_all_sources
 
 fact_check_router = APIRouter()
 
@@ -15,199 +17,6 @@ class CustomJSONEncoder(json.JSONEncoder):
             return obj.isoformat()
         return super().default(obj)
 
-class ErrorResponse(BaseModel):
-    detail: str
-    error_code: str = Field(..., description="Unique error code for this type of error")
-    timestamp: str = Field(default_factory=lambda: datetime.now().isoformat())
-    path: Optional[str] = Field(None, description="The endpoint path where error occurred")
-
-    model_config = ConfigDict(json_schema_extra={
-        "example": {
-            "detail": "Error description",
-            "error_code": "ERROR_CODE",
-            "timestamp": "2024-12-09T16:49:30.905765",
-            "path": "/check-facts"
-        }
-    })
-
-class RequestValidationError(BaseModel):
-    loc: List[str]
-    msg: str
-    type: str
-
-class Publisher(BaseModel):
-    name: str
-    site: Optional[str] = Field(None, description="Publisher's website")
-    
-    @validator('site')
-    def validate_site(cls, v):
-        if v and not (v.startswith('http://') or v.startswith('https://')):
-            return f"https://{v}"
-        return v
-
-class ClaimReview(BaseModel):
-    publisher: Publisher
-    url: Optional[HttpUrl] = None
-    title: Optional[str] = None
-    reviewDate: Optional[str] = None
-    textualRating: Optional[str] = None
-    languageCode: str = Field(default="en-US")
-
-class Claim(BaseModel):
-    text: str
-    claimant: Optional[str] = None
-    claimDate: Optional[str] = None
-    claimReview: List[ClaimReview]
-
-class FactCheckResponse(BaseModel):
-    query: str = Field(..., description="Original query that was fact-checked")
-    total_claims_found: int = Field(..., ge=0)
-    results: List[Claim] = Field(default_factory=list)
-    summary: Dict[str, int] = Field(...)
-
-    model_config = ConfigDict(json_schema_extra={
-        "example": {
-            "query": "Example claim",
-            "total_claims_found": 1,
-            "results": [{
-                "text": "Example claim text",
-                "claimant": "Source name",
-                "claimReview": [{
-                    "publisher": {
-                        "name": "Fact Checker",
-                        "site": "factchecker.com"
-                    },
-                    "textualRating": "True"
-                }]
-            }],
-            "summary": {
-                "total_sources": 1,
-                "fact_checking_sites_queried": 10
-            }
-        }
-    })
-
-class SourceType(str, Enum):
-    FACT_CHECKER = "fact_checker"
-    NEWS_SITE = "news_site"
-
-class FactCheckSource(BaseModel):
-    domain: str
-    type: SourceType
-    priority: int = Field(default=1, ge=1, le=10)
-
-    model_config = ConfigDict(json_schema_extra={
-        "example": {
-            "domain": "factcheck.org",
-            "type": "fact_checker",
-            "priority": 1
-        }
-    })
-
-# Sources configuration with validation
-SOURCES = {
-    "fact_checkers": [
-        FactCheckSource(domain=domain, type=SourceType.FACT_CHECKER, priority=1)
-        for domain in [
-            "factcheck.org",
-            "snopes.com",
-            "politifact.com",
-            "reuters.com",
-            "bbc.com",
-            "apnews.com",
-            "usatoday.com",
-            "nytimes.com",
-            "washingtonpost.com",
-            "afp.com",
-            "fullfact.org",
-            "truthorfiction.com",
-            "leadstories.com",
-            "altnews.in",
-            "boomlive.in",
-            "en.prothomalo.com"
-        ]
-    ],
-    "news_sites": [
-        FactCheckSource(domain=domain, type=SourceType.NEWS_SITE, priority=2)
-        for domain in [
-            "www.thedailystar.net",
-            "www.thefinancialexpress.com.bd",
-            "www.theindependentbd.com",
-            "www.dhakatribune.com",
-            "www.newagebd.net",
-            "www.observerbd.com",
-            "www.daily-sun.com",
-            "www.tbsnews.net",
-            "www.businesspostbd.com",
-            "www.banglanews24.com/english",
-            "www.bdnews24.com/english",
-            "www.risingbd.com/english",
-            "www.dailyindustry.news",
-            "www.bangladeshpost.net",
-            "www.daily-bangladesh.com/english"
-        ]
-    ]
-}
-
-class FactCheckRequest(BaseModel):
-    content: str = Field(
-        ...,
-        min_length=10,
-        max_length=1000,
-        description="The claim to be fact-checked"
-    )
-    language: str = Field(default="en-US", pattern="^[a-z]{2}-[A-Z]{2}$")
-    max_results_per_source: int = Field(default=10, ge=1, le=50)
-
-    @validator('content')
-    def validate_content(cls, v):
-        if not v.strip():
-            raise ValueError("Content cannot be empty or just whitespace")
-        return v.strip()
-
-async def fetch_fact_checks(
-    api_key: str,
-    base_url: str,
-    query: str,
-    site: FactCheckSource
-) -> Dict:
-    """
-    Fetch fact checks from a specific site using the Google Fact Check API
-    """
-    try:
-        if not api_key or not base_url:
-            raise ValueError("API key or base URL not configured")
-
-        params = {
-            "key": api_key,
-            "query": query,
-            "languageCode": "en-US",
-            "reviewPublisherSiteFilter": site.domain,
-            "pageSize": 10
-        }
-        
-        response = requests.get(base_url, params=params)
-        response.raise_for_status()
-        return response.json()
-    except requests.RequestException as e:
-        raise HTTPException(
-            status_code=503,
-            detail=ErrorResponse(
-                detail=f"Error fetching from {site.domain}: {str(e)}",
-                error_code="FACT_CHECK_SERVICE_ERROR",
-                path="/check-facts"
-            ).dict()
-        )
-    except ValueError as e:
-        raise HTTPException(
-            status_code=500,
-            detail=ErrorResponse(
-                detail=str(e),
-                error_code="CONFIGURATION_ERROR",
-                path="/check-facts"
-            ).dict()
-        )
-
 @fact_check_router.post(
     "/check-facts",
     response_model=FactCheckResponse,
@@ -225,7 +34,7 @@ async def check_facts(request: FactCheckRequest) -> FactCheckResponse:
     all_results = []
     
     # Validate configuration
-    if not GOOGLE_FACT_CHECK_API_KEY or not GOOGLE_FACT_CHECK_BASE_URL:
+    if not GOOGLE_API_KEY or not GOOGLE_FACT_CHECK_BASE_URL:
         raise HTTPException(
             status_code=500,
             detail=ErrorResponse(
@@ -235,17 +44,13 @@ async def check_facts(request: FactCheckRequest) -> FactCheckResponse:
             ).dict()
         )
     
-    # Check all sources in priority order
-    all_sources = (
-        SOURCES["fact_checkers"] +
-        SOURCES["news_sites"]
-    )
-    all_sources.sort(key=lambda x: x.priority)
+    # Get all sources in priority order
+    all_sources = get_all_sources()
     
     for source in all_sources:
         try:
             result = await fetch_fact_checks(
-                GOOGLE_FACT_CHECK_API_KEY,
+                GOOGLE_API_KEY,
                 GOOGLE_FACT_CHECK_BASE_URL,
                 request.content,
                 source

app/config.py

@@ -3,7 +3,7 @@ from dotenv import load_dotenv
 
 load_dotenv()
 
-GOOGLE_FACT_CHECK_API_KEY = os.environ["GOOGLE_FACT_CHECK_API_KEY"]
+GOOGLE_API_KEY = os.environ["GOOGLE_API_KEY"]
 GOOGLE_FACT_CHECK_BASE_URL= os.environ["GOOGLE_FACT_CHECK_BASE_URL"]
 
 OPENAI_API_KEY = os.environ["OPENAI_API_KEY"]

app/models/fact_check_models.py

@@ -0,0 +1,109 @@
+from pydantic import BaseModel, Field, HttpUrl, validator, ConfigDict
+from typing import Dict, List, Optional
+from enum import Enum
+from datetime import datetime
+
+class ErrorResponse(BaseModel):
+    detail: str
+    error_code: str = Field(..., description="Unique error code for this type of error")
+    timestamp: str = Field(default_factory=lambda: datetime.now().isoformat())
+    path: Optional[str] = Field(None, description="The endpoint path where error occurred")
+
+    model_config = ConfigDict(json_schema_extra={
+        "example": {
+            "detail": "Error description",
+            "error_code": "ERROR_CODE",
+            "timestamp": "2024-12-09T16:49:30.905765",
+            "path": "/check-facts"
+        }
+    })
+
+class RequestValidationError(BaseModel):
+    loc: List[str]
+    msg: str
+    type: str
+
+class Publisher(BaseModel):
+    name: str
+    site: Optional[str] = Field(None, description="Publisher's website")
+    
+    @validator('site')
+    def validate_site(cls, v):
+        if v and not (v.startswith('http://') or v.startswith('https://')):
+            return f"https://{v}"
+        return v
+
+class ClaimReview(BaseModel):
+    publisher: Publisher
+    url: Optional[HttpUrl] = None
+    title: Optional[str] = None
+    reviewDate: Optional[str] = None
+    textualRating: Optional[str] = None
+    languageCode: str = Field(default="en-US")
+
+class Claim(BaseModel):
+    text: str
+    claimant: Optional[str] = None
+    claimDate: Optional[str] = None
+    claimReview: List[ClaimReview]
+
+class FactCheckResponse(BaseModel):
+    query: str = Field(..., description="Original query that was fact-checked")
+    total_claims_found: int = Field(..., ge=0)
+    results: List[Claim] = Field(default_factory=list)
+    summary: Dict[str, int] = Field(...)
+
+    model_config = ConfigDict(json_schema_extra={
+        "example": {
+            "query": "Example claim",
+            "total_claims_found": 1,
+            "results": [{
+                "text": "Example claim text",
+                "claimant": "Source name",
+                "claimReview": [{
+                    "publisher": {
+                        "name": "Fact Checker",
+                        "site": "factchecker.com"
+                    },
+                    "textualRating": "True"
+                }]
+            }],
+            "summary": {
+                "total_sources": 1,
+                "fact_checking_sites_queried": 10
+            }
+        }
+    })
+
+class SourceType(str, Enum):
+    FACT_CHECKER = "fact_checker"
+    NEWS_SITE = "news_site"
+
+class FactCheckSource(BaseModel):
+    domain: str
+    type: SourceType
+    priority: int = Field(default=1, ge=1, le=10)
+
+    model_config = ConfigDict(json_schema_extra={
+        "example": {
+            "domain": "factcheck.org",
+            "type": "fact_checker",
+            "priority": 1
+        }
+    })
+
+class FactCheckRequest(BaseModel):
+    content: str = Field(
+        ...,
+        min_length=10,
+        max_length=1000,
+        description="The claim to be fact-checked"
+    )
+    language: str = Field(default="en-US", pattern="^[a-z]{2}-[A-Z]{2}$")
+    max_results_per_source: int = Field(default=10, ge=1, le=50)
+
+    @validator('content')
+    def validate_content(cls, v):
+        if not v.strip():
+            raise ValueError("Content cannot be empty or just whitespace")
+        return v.strip()

app/websites/fact_checker_website.py

@@ -0,0 +1,99 @@
+from typing import Dict, List
+import requests
+from fastapi import HTTPException
+from app.models.fact_check_models import FactCheckSource, ErrorResponse, FactCheckRequest, SourceType
+
+# Sources configuration with validation
+SOURCES = {
+    "fact_checkers": [
+        FactCheckSource(domain=domain, type=SourceType.FACT_CHECKER, priority=1)
+        for domain in [
+            "factcheck.org",
+            "snopes.com",
+            "politifact.com",
+            "reuters.com",
+            "bbc.com",
+            "apnews.com",
+            "usatoday.com",
+            "nytimes.com",
+            "washingtonpost.com",
+            "afp.com",
+            "fullfact.org",
+            "truthorfiction.com",
+            "leadstories.com",
+            "altnews.in",
+            "boomlive.in",
+            "en.prothomalo.com"
+        ]
+    ],
+    "news_sites": [
+        FactCheckSource(domain=domain, type=SourceType.NEWS_SITE, priority=2)
+        for domain in [
+            "www.thedailystar.net",
+            "www.thefinancialexpress.com.bd",
+            "www.theindependentbd.com",
+            "www.dhakatribune.com",
+            "www.newagebd.net",
+            "www.observerbd.com",
+            "www.daily-sun.com",
+            "www.tbsnews.net",
+            "www.businesspostbd.com",
+            "www.banglanews24.com/english",
+            "www.bdnews24.com/english",
+            "www.risingbd.com/english",
+            "www.dailyindustry.news",
+            "www.bangladeshpost.net",
+            "www.daily-bangladesh.com/english"
+        ]
+    ]
+}
+
+async def fetch_fact_checks(
+    api_key: str,
+    base_url: str,
+    query: str,
+    site: FactCheckSource
+) -> Dict:
+    """
+    Fetch fact checks from a specific site using the Google Fact Check API
+    """
+    try:
+        if not api_key or not base_url:
+            raise ValueError("API key or base URL not configured")
+
+        params = {
+            "key": api_key,
+            "query": query,
+            "languageCode": "en-US",
+            "reviewPublisherSiteFilter": site.domain,
+            "pageSize": 10
+        }
+        
+        response = requests.get(base_url, params=params)
+        response.raise_for_status()
+        return response.json()
+    except requests.RequestException as e:
+        raise HTTPException(
+            status_code=503,
+            detail=ErrorResponse(
+                detail=f"Error fetching from {site.domain}: {str(e)}",
+                error_code="FACT_CHECK_SERVICE_ERROR",
+                path="/check-facts"
+            ).dict()
+        )
+    except ValueError as e:
+        raise HTTPException(
+            status_code=500,
+            detail=ErrorResponse(
+                detail=str(e),
+                error_code="CONFIGURATION_ERROR",
+                path="/check-facts"
+            ).dict()
+        )
+
+def get_all_sources() -> List[FactCheckSource]:
+    """
+    Get all sources sorted by priority
+    """
+    all_sources = SOURCES["fact_checkers"] + SOURCES["news_sites"]
+    return sorted(all_sources, key=lambda x: x.priority)