use rusqlite::OptionalExtension;
use tauri::{Manager, State};
use tracing::warn;

use crate::ai::provider::create_provider;
use crate::ai::{AnalysisResult, ChatResponse, Message, ProviderInfo};
use crate::db::models::{AiConversation, AiMessage, AuditEntry};
use crate::state::{AppState, ProviderConfig};

#[tauri::command]
pub async fn analyze_logs(
    issue_id: String,
    log_file_ids: Vec<String>,
    provider_config: ProviderConfig,
    state: State<'_, AppState>,
) -> Result<AnalysisResult, String> {
    // Load log file contents — only redacted files may be sent to an AI provider
    let mut log_contents = String::new();
    {
        let db = state.db.lock().map_err(|e| e.to_string())?;
        for file_id in &log_file_ids {
            let mut stmt = db
                .prepare("SELECT file_name, file_path, redacted FROM log_files WHERE id = ?1")
                .map_err(|e| e.to_string())?;
            if let Ok((name, path, redacted)) = stmt.query_row([file_id], |row| {
                Ok((
                    row.get::<_, String>(0)?,
                    row.get::<_, String>(1)?,
                    row.get::<_, i32>(2)? != 0,
                ))
            }) {
                let redacted_path = redacted_path_for(&name, &path, redacted)?;
                log_contents.push_str(&format!("--- {name} ---\n"));
                if let Ok(content) = std::fs::read_to_string(&redacted_path) {
                    log_contents.push_str(&content);
                } else {
                    log_contents.push_str("[Could not read redacted file]\n");
                }
                log_contents.push('\n');
            }
        }
    }

    let provider = create_provider(&provider_config);

    let messages = vec![
        Message {
            role: "system".into(),
            content: "You are an expert IT engineer. Analyze the following log content and \
                      identify key issues, errors, and anomalies. Structure your response as: \
                      SUMMARY: (one paragraph), KEY_FINDINGS: (bullet list), \
                      FIRST_WHY: (initial why question for 5-whys analysis), \
                      SEVERITY: (critical/high/medium/low)"
                .into(),
            tool_call_id: None,
            tool_calls: None,
        },
        Message {
            role: "user".into(),
            content: format!("Analyze logs for issue {issue_id}:\n\n{log_contents}"),
            tool_call_id: None,
            tool_calls: None,
        },
    ];

    let response = provider
        .chat(messages, &provider_config, None)
        .await
        .map_err(|e| {
            warn!(error = %e, "ai analyze_logs provider request failed");
            "AI analysis request failed".to_string()
        })?;

    let content = &response.content;
    let summary = extract_section(content, "SUMMARY:").unwrap_or_else(|| {
        content
            .lines()
            .next()
            .unwrap_or("Analysis complete")
            .to_string()
    });
    let key_findings = extract_list(content, "KEY_FINDINGS:");
    let suggested_why1 = extract_section(content, "FIRST_WHY:")
        .unwrap_or_else(|| "Why did this issue occur?".to_string());
    let severity_assessment =
        extract_section(content, "SEVERITY:").unwrap_or_else(|| "medium".to_string());

    // Write audit entry
    {
        let db = state.db.lock().map_err(|e| e.to_string())?;
        let entry = AuditEntry::new(
            "ai_analyze_logs".to_string(),
            "issue".to_string(),
            issue_id.clone(),
            serde_json::json!({ "log_file_ids": log_file_ids, "provider": provider_config.name })
                .to_string(),
        );
        crate::audit::log::write_audit_event(
            &db,
            &entry.action,
            &entry.entity_type,
            &entry.entity_id,
            &entry.details,
        )
        .map_err(|_| "Failed to write security audit entry".to_string())?;
    }

    Ok(AnalysisResult {
        summary,
        key_findings,
        suggested_why1,
        severity_assessment,
    })
}

/// Returns the path to the `.redacted` file, or an error if the file has not been redacted.
fn redacted_path_for(name: &str, path: &str, redacted: bool) -> Result<String, String> {
    if !redacted {
        return Err(format!(
            "Log file '{name}' has not been scanned and redacted. \
             Run PII detection and apply redactions before sending to AI."
        ));
    }
    Ok(format!("{path}.redacted"))
}

fn extract_section(text: &str, header: &str) -> Option<String> {
    let start = text.find(header)?;
    let after = &text[start + header.len()..];
    let end = after.find('\n').unwrap_or(after.len());
    let section = after[..end].trim().to_string();
    if section.is_empty() {
        None
    } else {
        Some(section)
    }
}

fn extract_list(text: &str, header: &str) -> Vec<String> {
    let start = match text.find(header) {
        Some(s) => s + header.len(),
        None => return vec![],
    };
    let section = &text[start..];
    section
        .lines()
        .skip(1)
        .take_while(|l| {
            !l.chars()
                .next()
                .map(|c| c.is_uppercase() && l.contains(':'))
                .unwrap_or(false)
        })
        .filter(|l| l.trim_start().starts_with('-') || l.trim_start().starts_with('*'))
        .map(|l| {
            l.trim_start_matches(|c: char| c == '-' || c == '*' || c.is_whitespace())
                .to_string()
        })
        .filter(|s| !s.is_empty())
        .collect()
}

#[tauri::command]
pub async fn chat_message(
    issue_id: String,
    message: String,
    provider_config: ProviderConfig,
    app_handle: tauri::AppHandle,
    state: State<'_, AppState>,
) -> Result<ChatResponse, String> {
    // Find or create a conversation for this issue + provider
    let conversation_id = {
        let db = state.db.lock().map_err(|e| e.to_string())?;
        let existing: Option<String> = db
            .prepare("SELECT id FROM ai_conversations WHERE issue_id = ?1 AND provider = ?2 AND model = ?3 ORDER BY created_at DESC LIMIT 1")
            .and_then(|mut stmt| {
                stmt.query_row(
                    rusqlite::params![issue_id, provider_config.name, provider_config.model],
                    |row| row.get(0),
                )
            })
            .ok();

        match existing {
            Some(id) => id,
            None => {
                let conv = AiConversation::new(
                    issue_id.clone(),
                    provider_config.name.clone(),
                    provider_config.model.clone(),
                );
                db.execute(
                    "INSERT INTO ai_conversations (id, issue_id, provider, model, created_at, title) \
                     VALUES (?1, ?2, ?3, ?4, ?5, ?6)",
                    rusqlite::params![
                        conv.id, conv.issue_id, conv.provider, conv.model, conv.created_at, conv.title
                    ],
                )
                .map_err(|e| e.to_string())?;
                conv.id
            }
        }
    };

    // Load conversation history (use and_then to keep stmt lifetime within closure)
    let history: Vec<Message> = {
        let db = state.db.lock().map_err(|e| e.to_string())?;
        let raw: Vec<(String, String)> = db
            .prepare(
                "SELECT role, content FROM ai_messages WHERE conversation_id = ?1 ORDER BY created_at ASC",
            )
            .and_then(|mut stmt| {
                stmt.query_map([&conversation_id], |row| {
                    Ok((row.get::<_, String>(0)?, row.get::<_, String>(1)?))
                })
                .map(|rows| rows.filter_map(|r| r.ok()).collect::<Vec<_>>())
            })
            .unwrap_or_default();
        drop(db);
        raw.into_iter()
            .map(|(role, content)| Message {
                role,
                content,
                tool_call_id: None,
                tool_calls: None,
            })
            .collect()
    };

    let provider = create_provider(&provider_config);

    // Search integration sources for relevant context
    let integration_context = search_integration_sources(&message, &app_handle, &state).await;

    let mut messages = history;

    // If we found integration content, add it to the conversation context
    if !integration_context.is_empty() {
        let context_message = Message {
            role: "system".into(),
            content: format!(
                "INTERNAL DOCUMENTATION SOURCES:\n\n{integration_context}\n\n\
                 Instructions: The above content is from internal company documentation systems \
                 (Confluence, ServiceNow, Azure DevOps). \
                 \n\n**IMPORTANT**: First determine if this documentation is RELEVANT to the user's question:\
                 \n- If the documentation directly addresses the question → Use it and cite sources with URLs\
                 \n- If the documentation is tangentially related but doesn't answer the question → Briefly mention what internal docs exist, then provide a complete answer using general knowledge\
                 \n- If the documentation is completely unrelated → Ignore it and answer using general knowledge\
                 \n\nDo NOT force irrelevant internal documentation into your answer. The user needs accurate information, not forced citations."
            ),
            tool_call_id: None,
            tool_calls: None,
        };
        messages.push(context_message);
    }

    messages.push(Message {
        role: "user".into(),
        content: message.clone(),
        tool_call_id: None,
        tool_calls: None,
    });

    // Get available tools
    let tools = Some(crate::ai::tools::get_available_tools());

    // Tool-calling loop: keep calling until AI gives final answer
    let final_response;
    let max_iterations = 10; // Prevent infinite loops
    let mut iteration = 0;

    loop {
        iteration += 1;
        if iteration > max_iterations {
            return Err("Tool-calling loop exceeded maximum iterations".to_string());
        }

        let response = provider
            .chat(messages.clone(), &provider_config, tools.clone())
            .await
            .map_err(|e| {
                let error_msg = format!("AI provider request failed: {e}");
                warn!("{}", error_msg);
                error_msg
            })?;

        // Check if AI wants to call tools
        if let Some(tool_calls) = &response.tool_calls {
            tracing::info!("AI requested {} tool call(s)", tool_calls.len());

            // Execute each tool call
            for tool_call in tool_calls {
                tracing::info!("Executing tool: {}", tool_call.name);

                let tool_result = execute_tool_call(tool_call, &app_handle, &state).await;

                // Format result
                let result_content = match tool_result {
                    Ok(result) => result,
                    Err(e) => format!("Error executing tool: {e}"),
                };

                // Add tool result as a message
                messages.push(Message {
                    role: "tool".into(),
                    content: result_content,
                    tool_call_id: Some(tool_call.id.clone()),
                    tool_calls: None,
                });
            }

            // Continue loop to get AI's next response
            continue;
        }

        // No tool calls - this is the final answer
        final_response = response;
        break;
    }

    // Save both user message and response to DB
    {
        let db = state.db.lock().map_err(|e| e.to_string())?;
        let user_msg = AiMessage::new(conversation_id.clone(), "user".to_string(), message);
        let asst_msg = AiMessage::new(
            conversation_id,
            "assistant".to_string(),
            final_response.content.clone(),
        );

        db.execute(
            "INSERT INTO ai_messages (id, conversation_id, role, content, token_count, created_at) \
             VALUES (?1, ?2, ?3, ?4, ?5, ?6)",
            rusqlite::params![
                user_msg.id, user_msg.conversation_id, user_msg.role,
                user_msg.content, user_msg.token_count, user_msg.created_at
            ],
        )
        .map_err(|e| e.to_string())?;

        db.execute(
            "INSERT INTO ai_messages (id, conversation_id, role, content, token_count, created_at) \
             VALUES (?1, ?2, ?3, ?4, ?5, ?6)",
            rusqlite::params![
                asst_msg.id, asst_msg.conversation_id, asst_msg.role,
                asst_msg.content, asst_msg.token_count, asst_msg.created_at
            ],
        )
        .map_err(|e| e.to_string())?;

        // Audit - capture full transmission details
        let audit_details = serde_json::json!({
            "provider": provider_config.name,
            "model": provider_config.model,
            "api_url": provider_config.api_url,
            "user_message": user_msg.content,
            "response_preview": if final_response.content.len() > 200 {
                format!("{preview}...", preview = &final_response.content[..200])
            } else {
                final_response.content.clone()
            },
            "token_count": user_msg.token_count,
        });
        let entry = AuditEntry::new(
            "ai_chat".to_string(),
            "issue".to_string(),
            issue_id,
            audit_details.to_string(),
        );
        if let Err(err) = crate::audit::log::write_audit_event(
            &db,
            &entry.action,
            &entry.entity_type,
            &entry.entity_id,
            &entry.details,
        ) {
            warn!(error = %err, "failed to write ai_chat audit entry");
        }
    }

    Ok(final_response)
}

#[tauri::command]
pub async fn test_provider_connection(
    provider_config: ProviderConfig,
) -> Result<ChatResponse, String> {
    let provider = create_provider(&provider_config);
    let messages = vec![Message {
        role: "user".into(),
        content:
            "Reply with exactly: Troubleshooting and RCA Assistant connection test successful."
                .into(),
        tool_call_id: None,
        tool_calls: None,
    }];
    provider
        .chat(messages, &provider_config, None)
        .await
        .map_err(|e| {
            warn!(error = %e, "ai test_provider_connection failed");
            "Provider connection test failed".to_string()
        })
}

#[tauri::command]
pub async fn list_providers() -> Result<Vec<ProviderInfo>, String> {
    Ok(vec![
        ProviderInfo {
            name: "openai".to_string(),
            supports_streaming: true,
            models: vec!["gpt-4o".to_string(), "gpt-4o-mini".to_string()],
        },
        ProviderInfo {
            name: "anthropic".to_string(),
            supports_streaming: true,
            models: vec![
                "claude-3-5-sonnet-20241022".to_string(),
                "claude-3-haiku-20240307".to_string(),
            ],
        },
        ProviderInfo {
            name: "gemini".to_string(),
            supports_streaming: false,
            models: vec!["gemini-1.5-pro".to_string(), "gemini-1.5-flash".to_string()],
        },
        ProviderInfo {
            name: "mistral".to_string(),
            supports_streaming: true,
            models: vec![
                "mistral-large-latest".to_string(),
                "mistral-small-latest".to_string(),
            ],
        },
        ProviderInfo {
            name: "ollama".to_string(),
            supports_streaming: false,
            models: vec!["llama3.2:3b".to_string(), "llama3.1:8b".to_string()],
        },
    ])
}

/// Search integration sources (Confluence, ServiceNow, Azure DevOps) for relevant context
async fn search_integration_sources(
    query: &str,
    app_handle: &tauri::AppHandle,
    state: &State<'_, AppState>,
) -> String {
    let mut all_results = Vec::new();

    // Try to get integration configurations
    let configs: Vec<crate::commands::integrations::IntegrationConfig> = {
        let db = match state.db.lock() {
            Ok(db) => db,
            Err(e) => {
                tracing::warn!("Failed to lock database: {}", e);
                return String::new();
            }
        };

        let mut stmt = match db.prepare(
            "SELECT service, base_url, username, project_name, space_key FROM integration_config",
        ) {
            Ok(stmt) => stmt,
            Err(e) => {
                tracing::warn!("Failed to prepare statement: {}", e);
                return String::new();
            }
        };

        let rows = match stmt.query_map([], |row| {
            Ok(crate::commands::integrations::IntegrationConfig {
                service: row.get(0)?,
                base_url: row.get(1)?,
                username: row.get(2)?,
                project_name: row.get(3)?,
                space_key: row.get(4)?,
            })
        }) {
            Ok(rows) => rows,
            Err(e) => {
                tracing::warn!("Failed to query integration configs: {}", e);
                return String::new();
            }
        };

        rows.filter_map(|r| r.ok()).collect()
    };

    // Search each available integration in parallel
    let mut search_tasks = Vec::new();

    for config in configs {
        // Authentication priority:
        // 1. Try cookies from persistent browser (may fail for HttpOnly)
        // 2. Try stored credentials from database
        // 3. Fall back to webview-based search (uses browser's session directly)

        let cookies_opt = match crate::commands::integrations::get_fresh_cookies_from_webview(
            &config.service,
            app_handle,
            state,
        )
        .await
        {
            Ok(Some(cookies)) => {
                tracing::info!("Using extracted cookies for {}", config.service);
                Some(cookies)
            }
            _ => {
                // Fallback: check for stored credentials in database
                tracing::info!(
                    "Cookie extraction failed for {}, checking stored credentials",
                    config.service
                );
                let encrypted_token: Option<String> = {
                    let db = match state.db.lock() {
                        Ok(db) => db,
                        Err(_) => continue,
                    };
                    db.query_row(
                        "SELECT encrypted_token FROM credentials WHERE service = ?1",
                        [&config.service],
                        |row| row.get::<_, String>(0),
                    )
                    .optional()
                    .ok()
                    .flatten()
                };

                if let Some(token) = encrypted_token {
                    if let Ok(decrypted) = crate::integrations::auth::decrypt_token(&token) {
                        // Try to parse as cookies JSON
                        if let Ok(cookie_list) = serde_json::from_str::<
                            Vec<crate::integrations::webview_auth::Cookie>,
                        >(&decrypted)
                        {
                            tracing::info!(
                                "Using stored cookies for {} (count: {})",
                                config.service,
                                cookie_list.len()
                            );
                            Some(cookie_list)
                        } else {
                            tracing::warn!(
                                "Stored credentials for {} not in cookie format",
                                config.service
                            );
                            None
                        }
                    } else {
                        None
                    }
                } else {
                    None
                }
            }
        };

        // If we have cookies (from extraction or database), use standard API search
        if let Some(cookies) = cookies_opt {
            match config.service.as_str() {
                "confluence" => {
                    let base_url = config.base_url.clone();
                    let query = query.to_string();
                    let cookies_clone = cookies.clone();
                    search_tasks.push(tokio::spawn(async move {
                        crate::integrations::confluence_search::search_confluence(
                            &base_url,
                            &query,
                            &cookies_clone,
                        )
                        .await
                        .unwrap_or_default()
                    }));
                }
                "servicenow" => {
                    let instance_url = config.base_url.clone();
                    let query = query.to_string();
                    let cookies_clone = cookies.clone();
                    search_tasks.push(tokio::spawn(async move {
                        let mut results = Vec::new();
                        // Search knowledge base
                        if let Ok(kb_results) =
                            crate::integrations::servicenow_search::search_servicenow(
                                &instance_url,
                                &query,
                                &cookies_clone,
                            )
                            .await
                        {
                            results.extend(kb_results);
                        }
                        // Search incidents
                        if let Ok(incident_results) =
                            crate::integrations::servicenow_search::search_incidents(
                                &instance_url,
                                &query,
                                &cookies_clone,
                            )
                            .await
                        {
                            results.extend(incident_results);
                        }
                        results
                    }));
                }
                "azuredevops" => {
                    let org_url = config.base_url.clone();
                    let project = config.project_name.unwrap_or_default();
                    let query = query.to_string();
                    let cookies_clone = cookies.clone();
                    search_tasks.push(tokio::spawn(async move {
                        let mut results = Vec::new();
                        // Search wiki
                        if let Ok(wiki_results) =
                            crate::integrations::azuredevops_search::search_wiki(
                                &org_url,
                                &project,
                                &query,
                                &cookies_clone,
                            )
                            .await
                        {
                            results.extend(wiki_results);
                        }
                        // Search work items
                        if let Ok(wi_results) =
                            crate::integrations::azuredevops_search::search_work_items(
                                &org_url,
                                &project,
                                &query,
                                &cookies_clone,
                            )
                            .await
                        {
                            results.extend(wi_results);
                        }
                        results
                    }));
                }
                _ => {}
            }
        } else {
            // Final fallback: try webview-based fetch (includes HttpOnly cookies automatically)
            // This makes HTTP requests FROM the authenticated webview, which includes all cookies
            tracing::info!(
                "No extracted cookies for {}, trying webview-based fetch",
                config.service
            );

            // Check if webview exists for this service
            let webview_label = {
                let webviews = match state.integration_webviews.lock() {
                    Ok(w) => w,
                    Err(_) => continue,
                };
                webviews.get(&config.service).cloned()
            };

            if let Some(label) = webview_label {
                // Get window handle
                if let Some(webview_window) = app_handle.get_webview_window(&label) {
                    let base_url = config.base_url.clone();
                    let service = config.service.clone();
                    let query_str = query.to_string();

                    match service.as_str() {
                        "confluence" => {
                            search_tasks.push(tokio::spawn(async move {
                                tracing::info!("Executing Confluence search via webview fetch");
                                match crate::integrations::webview_fetch::search_confluence_webview(
                                    &webview_window,
                                    &base_url,
                                    &query_str,
                                )
                                .await
                                {
                                    Ok(results) => {
                                        tracing::info!(
                                            "Webview fetch for Confluence returned {} results",
                                            results.len()
                                        );
                                        results
                                    }
                                    Err(e) => {
                                        tracing::warn!(
                                            "Webview fetch failed for Confluence: {}",
                                            e
                                        );
                                        Vec::new()
                                    }
                                }
                            }));
                        }
                        "servicenow" => {
                            search_tasks.push(tokio::spawn(async move {
                                tracing::info!("Executing ServiceNow search via webview fetch");
                                match crate::integrations::webview_fetch::search_servicenow_webview(
                                    &webview_window,
                                    &base_url,
                                    &query_str,
                                )
                                .await
                                {
                                    Ok(results) => {
                                        tracing::info!(
                                            "Webview fetch for ServiceNow returned {} results",
                                            results.len()
                                        );
                                        results
                                    }
                                    Err(e) => {
                                        tracing::warn!(
                                            "Webview fetch failed for ServiceNow: {}",
                                            e
                                        );
                                        Vec::new()
                                    }
                                }
                            }));
                        }
                        "azuredevops" => {
                            let project = config.project_name.unwrap_or_default();
                            search_tasks.push(tokio::spawn(async move {
                                tracing::info!("Executing Azure DevOps search via webview fetch");
                                let mut results = Vec::new();

                                // Search wiki
                                match crate::integrations::webview_fetch::search_azuredevops_wiki_webview(
                                    &webview_window,
                                    &base_url,
                                    &project,
                                    &query_str
                                ).await {
                                    Ok(wiki_results) => {
                                        tracing::info!("Webview fetch for ADO wiki returned {} results", wiki_results.len());
                                        results.extend(wiki_results);
                                    }
                                    Err(e) => {
                                        tracing::warn!("Webview fetch failed for ADO wiki: {}", e);
                                    }
                                }

                                // Search work items
                                match crate::integrations::webview_fetch::search_azuredevops_workitems_webview(
                                    &webview_window,
                                    &base_url,
                                    &project,
                                    &query_str
                                ).await {
                                    Ok(wi_results) => {
                                        tracing::info!("Webview fetch for ADO work items returned {} results", wi_results.len());
                                        results.extend(wi_results);
                                    }
                                    Err(e) => {
                                        tracing::warn!("Webview fetch failed for ADO work items: {}", e);
                                    }
                                }

                                results
                            }));
                        }
                        _ => {}
                    }
                } else {
                    tracing::warn!("Webview window not found for {}", config.service);
                }
            } else {
                tracing::warn!(
                    "No webview open for {} - cannot search. Please open browser window in Settings → Integrations",
                    config.service
                );
            }
        }
    }

    // Wait for all searches to complete
    for task in search_tasks {
        if let Ok(results) = task.await {
            all_results.extend(results);
        }
    }

    // Format results for AI context
    if all_results.is_empty() {
        return String::new();
    }

    let mut context = String::new();
    for (idx, result) in all_results.iter().enumerate() {
        context.push_str(&format!("--- SOURCE {} ({}) ---\n", idx + 1, result.source));
        context.push_str(&format!("Title: {}\n", result.title));
        context.push_str(&format!("URL: {}\n", result.url));

        if let Some(content) = &result.content {
            context.push_str(&format!("Content:\n{content}\n\n"));
        } else {
            context.push_str(&format!("Excerpt: {}\n\n", result.excerpt));
        }
    }

    tracing::info!(
        "Found {} integration sources for AI context",
        all_results.len()
    );
    context
}

/// Execute a tool call made by the AI
async fn execute_tool_call(
    tool_call: &crate::ai::ToolCall,
    app_handle: &tauri::AppHandle,
    app_state: &State<'_, AppState>,
) -> Result<String, String> {
    match tool_call.name.as_str() {
        "add_ado_comment" => {
            // Parse arguments
            let args: serde_json::Value = serde_json::from_str(&tool_call.arguments)
                .map_err(|e| format!("Failed to parse tool arguments: {e}"))?;

            let work_item_id = args
                .get("work_item_id")
                .and_then(|v| v.as_i64())
                .ok_or_else(|| "Missing or invalid work_item_id parameter".to_string())?;

            let comment_text = args
                .get("comment_text")
                .and_then(|v| v.as_str())
                .ok_or_else(|| "Missing or invalid comment_text parameter".to_string())?;

            // Execute the add_ado_comment command
            tracing::info!(
                "AI executing tool: add_ado_comment({}, \"{}\")",
                work_item_id,
                comment_text
            );
            crate::commands::integrations::add_ado_comment(
                work_item_id,
                comment_text.to_string(),
                app_handle.clone(),
                app_state.clone(),
            )
            .await
        }
        _ => {
            let error = format!("Unknown tool: {}", tool_call.name);
            tracing::warn!("{}", error);
            Err(error)
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_extract_section_basic() {
        let text = "SUMMARY: The server crashed due to OOM.\nKEY_FINDINGS:\n- item";
        assert_eq!(
            extract_section(text, "SUMMARY:"),
            Some("The server crashed due to OOM.".to_string())
        );
    }

    #[test]
    fn test_extract_section_missing() {
        let text = "No matching header here";
        assert_eq!(extract_section(text, "SUMMARY:"), None);
    }

    #[test]
    fn test_extract_section_empty_value() {
        let text = "SUMMARY:\nKEY_FINDINGS:";
        assert_eq!(extract_section(text, "SUMMARY:"), None);
    }

    #[test]
    fn test_extract_section_last_line() {
        let text = "SEVERITY: critical";
        assert_eq!(
            extract_section(text, "SEVERITY:"),
            Some("critical".to_string())
        );
    }

    #[test]
    fn test_extract_list_basic() {
        let text = "KEY_FINDINGS:\n- First issue\n- Second issue\nSEVERITY: high";
        let list = extract_list(text, "KEY_FINDINGS:");
        assert_eq!(list, vec!["First issue", "Second issue"]);
    }

    #[test]
    fn test_extract_list_with_asterisks() {
        let text = "KEY_FINDINGS:\n* Item one\n* Item two\nFIRST_WHY: Why?";
        let list = extract_list(text, "KEY_FINDINGS:");
        assert_eq!(list, vec!["Item one", "Item two"]);
    }

    #[test]
    fn test_redacted_path_rejects_unredacted_file() {
        let err = redacted_path_for("app.log", "/data/app.log", false).unwrap_err();
        assert!(err.contains("app.log"));
        assert!(err.contains("redacted"));
    }

    #[test]
    fn test_redacted_path_returns_dotredacted_suffix() {
        let path = redacted_path_for("app.log", "/data/app.log", true).unwrap();
        assert_eq!(path, "/data/app.log.redacted");
    }

    #[test]
    fn test_extract_list_missing_header() {
        let text = "No findings here";
        let list = extract_list(text, "KEY_FINDINGS:");
        assert!(list.is_empty());
    }

    #[test]
    fn test_extract_list_empty_items_filtered() {
        let text = "KEY_FINDINGS:\n- \n- Actual item\n-  \nNEXT:";
        let list = extract_list(text, "KEY_FINDINGS:");
        assert_eq!(list, vec!["Actual item"]);
    }
}