use super::confluence_search::SearchResult;

/// Search Azure DevOps Wiki for content matching the query
pub async fn search_wiki(
    org_url: &str,
    project: &str,
    query: &str,
    cookies: &[crate::integrations::webview_auth::Cookie],
) -> Result<Vec<SearchResult>, String> {
    let cookie_header = crate::integrations::webview_auth::cookies_to_header(cookies);
    let client = reqwest::Client::new();

    // Use Azure DevOps Search API
    let search_url = format!(
        "{}/_apis/search/wikisearchresults?api-version=7.0",
        org_url.trim_end_matches('/')
    );

    let search_body = serde_json::json!({
        "searchText": query,
        "$top": 5,
        "filters": {
            "ProjectFilters": [project]
        }
    });

    tracing::info!("Searching Azure DevOps Wiki: {}", search_url);

    let resp = client
        .post(&search_url)
        .header("Cookie", &cookie_header)
        .header("Accept", "application/json")
        .header("Content-Type", "application/json")
        .json(&search_body)
        .send()
        .await
        .map_err(|e| format!("Azure DevOps wiki search failed: {e}"))?;

    if !resp.status().is_success() {
        let status = resp.status();
        let text = resp.text().await.unwrap_or_default();
        return Err(format!(
            "Azure DevOps wiki search failed with status {status}: {text}"
        ));
    }

    let json: serde_json::Value = resp
        .json()
        .await
        .map_err(|e| format!("Failed to parse ADO wiki search response: {e}"))?;

    let mut results = Vec::new();

    if let Some(results_array) = json["results"].as_array() {
        for item in results_array.iter().take(3) {
            let title = item["fileName"].as_str().unwrap_or("Untitled").to_string();

            let path = item["path"].as_str().unwrap_or("");
            let url = format!(
                "{}/_wiki/wikis/{}/{}",
                org_url.trim_end_matches('/'),
                project,
                path
            );

            let excerpt = item["content"]
                .as_str()
                .unwrap_or("")
                .chars()
                .take(300)
                .collect::<String>();

            // Fetch full wiki page content
            let content = if let Some(wiki_id) = item["wiki"]["id"].as_str() {
                if let Some(page_path) = item["path"].as_str() {
                    fetch_wiki_page(org_url, wiki_id, page_path, &cookie_header)
                        .await
                        .ok()
                } else {
                    None
                }
            } else {
                None
            };

            results.push(SearchResult {
                title,
                url,
                excerpt,
                content,
                source: "Azure DevOps".to_string(),
            });
        }
    }

    Ok(results)
}

/// Fetch full wiki page content
async fn fetch_wiki_page(
    org_url: &str,
    wiki_id: &str,
    page_path: &str,
    cookie_header: &str,
) -> Result<String, String> {
    let client = reqwest::Client::new();
    let page_url = format!(
        "{}/_apis/wiki/wikis/{}/pages?path={}&api-version=7.0&includeContent=true",
        org_url.trim_end_matches('/'),
        wiki_id,
        urlencoding::encode(page_path)
    );

    let resp = client
        .get(&page_url)
        .header("Cookie", cookie_header)
        .header("Accept", "application/json")
        .send()
        .await
        .map_err(|e| format!("Failed to fetch wiki page: {e}"))?;

    if !resp.status().is_success() {
        let status = resp.status();
        return Err(format!("Failed to fetch wiki page: {status}"));
    }

    let json: serde_json::Value = resp
        .json()
        .await
        .map_err(|e| format!("Failed to parse wiki page: {e}"))?;

    let content = json["content"].as_str().unwrap_or("").to_string();

    // Truncate to reasonable length
    let truncated = if content.len() > 3000 {
        format!("{}...", &content[..3000])
    } else {
        content
    };

    Ok(truncated)
}

/// Search Azure DevOps Work Items for related issues
pub async fn search_work_items(
    org_url: &str,
    project: &str,
    query: &str,
    cookies: &[crate::integrations::webview_auth::Cookie],
) -> Result<Vec<SearchResult>, String> {
    let cookie_header = crate::integrations::webview_auth::cookies_to_header(cookies);
    let client = reqwest::Client::new();

    // Use WIQL (Work Item Query Language)
    let wiql_url = format!(
        "{}/_apis/wit/wiql?api-version=7.0",
        org_url.trim_end_matches('/')
    );

    let wiql_query = format!(
        "SELECT [System.Id], [System.Title], [System.Description], [System.State] FROM WorkItems WHERE [System.TeamProject] = '{project}' AND ([System.Title] CONTAINS '{query}' OR [System.Description] CONTAINS '{query}') ORDER BY [System.ChangedDate] DESC"
    );

    let wiql_body = serde_json::json!({
        "query": wiql_query
    });

    tracing::info!("Searching Azure DevOps work items");

    let resp = client
        .post(&wiql_url)
        .header("Cookie", &cookie_header)
        .header("Accept", "application/json")
        .header("Content-Type", "application/json")
        .json(&wiql_body)
        .send()
        .await
        .map_err(|e| format!("ADO work item search failed: {e}"))?;

    if !resp.status().is_success() {
        return Ok(Vec::new()); // Don't fail if work item search fails
    }

    let json: serde_json::Value = resp
        .json()
        .await
        .map_err(|_| "Failed to parse work item response".to_string())?;

    let mut results = Vec::new();

    if let Some(work_items) = json["workItems"].as_array() {
        // Fetch details for top 3 work items
        for item in work_items.iter().take(3) {
            if let Some(id) = item["id"].as_i64() {
                if let Ok(work_item) = fetch_work_item_details(org_url, id, &cookie_header).await {
                    results.push(work_item);
                }
            }
        }
    }

    Ok(results)
}

/// Fetch work item details
async fn fetch_work_item_details(
    org_url: &str,
    id: i64,
    cookie_header: &str,
) -> Result<SearchResult, String> {
    let client = reqwest::Client::new();
    let item_url = format!(
        "{}/_apis/wit/workitems/{}?api-version=7.0",
        org_url.trim_end_matches('/'),
        id
    );

    let resp = client
        .get(&item_url)
        .header("Cookie", cookie_header)
        .header("Accept", "application/json")
        .send()
        .await
        .map_err(|e| format!("Failed to fetch work item: {e}"))?;

    if !resp.status().is_success() {
        let status = resp.status();
        return Err(format!("Failed to fetch work item: {status}"));
    }

    let json: serde_json::Value = resp
        .json()
        .await
        .map_err(|e| format!("Failed to parse work item: {e}"))?;

    let fields = &json["fields"];
    let title = format!(
        "Work Item {}: {}",
        id,
        fields["System.Title"].as_str().unwrap_or("No title")
    );

    let url = json["_links"]["html"]["href"]
        .as_str()
        .unwrap_or("")
        .to_string();

    let description = fields["System.Description"]
        .as_str()
        .unwrap_or("")
        .to_string();

    let state = fields["System.State"].as_str().unwrap_or("Unknown");
    let content = format!("State: {state}\n\nDescription: {description}");

    let excerpt = content.chars().take(200).collect::<String>();

    Ok(SearchResult {
        title,
        url,
        excerpt,
        content: Some(content),
        source: "Azure DevOps".to_string(),
    })
}