fix(server): resolve compilation warnings and fix test that expects no pass, to have it actually expect pass

docs/v2.6.0

@@ -0,0 +1,2 @@
+> [!WARNING]
+> The external dependencies `catdoc` and `antiword` have been added to support consumption of `.doc` documents.

src/db/documents/search.rs

@@ -195,7 +195,7 @@ impl Database {
             ("ocr_text", document.ocr_text.as_deref().unwrap_or(""))
         ];
 
-        for (source, text) in texts {
+        for (_source, text) in texts {
             if text.is_empty() {
                 continue;
             }

src/db/source_errors.rs

@@ -6,7 +6,7 @@ use std::collections::HashMap;
 use super::Database;
 use crate::models::{
     CreateSourceScanFailure, SourceScanFailure, SourceScanFailureStats,
-    ErrorSourceType, SourceErrorType, SourceErrorSeverity, ListFailuresQuery,
+    ErrorSourceType, ListFailuresQuery,
 };
 
 impl Database {
@@ -59,22 +59,22 @@ impl Database {
             let mut bind_index = 2;
             let mut conditions = Vec::new();
 
-            if let Some(source_type) = &query.source_type {
+            if let Some(_source_type) = &query.source_type {
                 conditions.push(format!("source_type = ${}::source_error_source_type", bind_index));
                 bind_index += 1;
             }
 
-            if let Some(source_id) = &query.source_id {
+            if let Some(_source_id) = &query.source_id {
                 conditions.push(format!("source_id = ${}", bind_index));
                 bind_index += 1;
             }
 
-            if let Some(error_type) = &query.error_type {
+            if let Some(_error_type) = &query.error_type {
                 conditions.push(format!("error_type = ${}::source_error_type", bind_index));
                 bind_index += 1;
             }
 
-            if let Some(severity) = &query.severity {
+            if let Some(_severity) = &query.severity {
                 conditions.push(format!("error_severity = ${}::source_error_severity", bind_index));
                 bind_index += 1;
             }
@@ -104,12 +104,12 @@ impl Database {
 
             sql.push_str(" ORDER BY error_severity DESC, last_failure_at DESC");
 
-            if let Some(limit) = query.limit {
+            if let Some(_limit) = query.limit {
                 sql.push_str(&format!(" LIMIT ${}", bind_index));
                 bind_index += 1;
             }
 
-            if let Some(offset) = query.offset {
+            if let Some(_offset) = query.offset {
                 sql.push_str(&format!(" OFFSET ${}", bind_index));
             }
 
@@ -361,7 +361,7 @@ impl Database {
                    WHERE user_id = $1"#
             );
 
-            let mut bind_index = 2;
+            let bind_index = 2;
             if let Some(_) = source_type {
                 sql.push_str(&format!(" AND source_type = ${}::source_error_source_type", bind_index));
             }

src/services/local_folder_error_classifier.rs

@@ -1,5 +1,4 @@
-use anyhow::Result;
-use std::collections::HashMap;
+// Unused imports removed - anyhow::Result and std::collections::HashMap are not used in this file
 
 use crate::models::{
     ErrorSourceType, SourceErrorType, SourceErrorSeverity, SourceErrorClassifier,

src/services/s3_error_classifier.rs

@@ -1,5 +1,4 @@
-use anyhow::Result;
-use std::collections::HashMap;
+// Unused imports removed - anyhow::Result and std::collections::HashMap are not used in this file
 
 use crate::models::{
     ErrorSourceType, SourceErrorType, SourceErrorSeverity, SourceErrorClassifier,

src/services/webdav/service.rs

@@ -1,11 +1,11 @@
 use anyhow::{anyhow, Result};
-use reqwest::{Client, Method, Response};
+use reqwest::{Client, Method};
 use std::sync::Arc;
 use std::time::{Duration, Instant};
-use std::collections::{HashMap, HashSet};
+use std::collections::HashSet;
 use tokio::sync::Semaphore;
 use tokio::time::sleep;
-use futures_util::stream;
+// futures_util::stream import removed as unused
 use tracing::{debug, error, info, warn};
 use serde::{Deserialize, Serialize};
 use rand::Rng;
@@ -15,12 +15,11 @@ use crate::models::{
 };
 use crate::models::source::{
     WebDAVConnectionResult, WebDAVCrawlEstimate, WebDAVTestConnection,
-    WebDAVFolderInfo,
 };
 use crate::models::source_error::{ErrorSourceType, ErrorContext};
 use crate::services::source_error_tracker::SourceErrorTracker;
 use crate::webdav_xml_parser::{parse_propfind_response, parse_propfind_response_with_directories};
-use crate::mime_detection::{detect_mime_from_content, update_mime_type_with_content, MimeDetectionResult};
+use crate::mime_detection::{detect_mime_from_content, MimeDetectionResult};
 
 use super::{config::{WebDAVConfig, RetryConfig, ConcurrencyConfig}, SyncProgress};
 use super::common::build_user_agent;

tests/integration_office_document_extraction_tests.rs

@@ -328,12 +328,13 @@ async fn test_corrupted_docx() {
 }
 
 #[tokio::test]
-async fn test_legacy_doc_error() {
+async fn test_legacy_doc_extraction() {
     let temp_dir = TempDir::new().unwrap();
     let doc_path = temp_dir.path().join("legacy.doc");
     
-    // Create a fake DOC file
-    fs::write(&doc_path, b"Legacy DOC format").unwrap();
+    // Create a simple text file with .doc extension to test DOC processing
+    // catdoc will process this as text, which is expected behavior
+    fs::write(&doc_path, b"This is test content for DOC extraction").unwrap();
     
     // Create OCR service
     let ocr_service = EnhancedOcrService {
@@ -343,19 +344,81 @@ async fn test_legacy_doc_error() {
     
     let settings = Settings::default();
     
-    // Try to extract text from legacy DOC
+    // Try to extract text from DOC file
     let result = ocr_service.extract_text_from_office(
         doc_path.to_str().unwrap(),
         "application/msword",
         &settings
     ).await;
     
-    // Should fail with helpful error about external tools not available
-    assert!(result.is_err(), "Legacy DOC should return an error");
-    let error_msg = result.unwrap_err().to_string();
-    // The error message now comes from external tool extraction failure
-    assert!(error_msg.contains("DOC extraction tools") || error_msg.contains("antiword") || error_msg.contains("catdoc"), 
-            "Expected error about DOC extraction tools, got: {}", error_msg);
+    // DOC processing should succeed when external tools are available
+    assert!(result.is_ok(), "DOC extraction should succeed when tools are available");
+    let ocr_result = result.unwrap();
+    
+    // Verify the extraction results
+    assert!(ocr_result.word_count > 0, "Should have extracted some words");
+    assert!(ocr_result.text.contains("test content"), "Should contain the test text");
+    assert!(ocr_result.confidence > 0.0, "Should have confidence score");
+    assert!(ocr_result.preprocessing_applied.len() > 0, "Should have preprocessing steps recorded");
+    
+    // Verify it used an external DOC tool
+    let preprocessing_info = &ocr_result.preprocessing_applied[0];
+    assert!(
+        preprocessing_info.contains("catdoc") || 
+        preprocessing_info.contains("antiword") || 
+        preprocessing_info.contains("wvText"),
+        "Should indicate which DOC tool was used"
+    );
+}
+
+#[tokio::test]
+async fn test_legacy_doc_error_when_tools_unavailable() {
+    // This test documents the expected behavior when DOC extraction tools are not available.
+    // Since antiword and catdoc are available in the current test environment, this test
+    // would need to be run in an environment without these tools to actually fail.
+    // For now, this serves as documentation of the expected error message format.
+    
+    let temp_dir = TempDir::new().unwrap();
+    let doc_path = temp_dir.path().join("test.doc");
+    
+    // Create a test DOC file
+    fs::write(&doc_path, b"Test DOC content").unwrap();
+    
+    // Create OCR service
+    let ocr_service = EnhancedOcrService {
+        temp_dir: temp_dir.path().to_str().unwrap().to_string(),
+        file_service: FileService::new(temp_dir.path().to_str().unwrap().to_string()),
+    };
+    
+    let settings = Settings::default();
+    
+    // Try to extract text from DOC file
+    let result = ocr_service.extract_text_from_office(
+        doc_path.to_str().unwrap(),
+        "application/msword",
+        &settings
+    ).await;
+    
+    // Since tools are available in this environment, this should succeed
+    // In an environment without DOC tools, it would fail with a helpful error message like:
+    // "None of the DOC extraction tools (antiword, catdoc, wvText) are available or working."
+    match result {
+        Ok(ocr_result) => {
+            // Tools are available - verify successful extraction
+            assert!(ocr_result.word_count > 0, "Should extract text when tools are available");
+            println!("DOC tools are available, extraction succeeded with {} words", ocr_result.word_count);
+        }
+        Err(error) => {
+            // Tools are not available - verify proper error message
+            let error_msg = error.to_string();
+            assert!(
+                error_msg.contains("DOC extraction tools") &&
+                (error_msg.contains("antiword") || error_msg.contains("catdoc") || error_msg.contains("wvText")),
+                "Should provide helpful error about missing DOC tools, got: {}", error_msg
+            );
+            println!("DOC tools not available, got expected error: {}", error_msg);
+        }
+    }
 }
 
 #[tokio::test]