use crate::errors::ImportError;

use super::{
    ImportProvider, ProbeInfo, ProbeRequest, api_base, encode_project_path, get_json, http_client,
    json_i64, json_string, source_path,
};

pub async fn probe(request: ProbeRequest<'_>) -> Result<ProbeInfo, ImportError> {
    let client = http_client(request.config)?;
    let base = api_base(ImportProvider::Gitlab, request.base_url, request.config)?;
    let (path, fallback_name) = source_path(ImportProvider::Gitlab, request.source)?;
    let url = format!(
        "{base}/projects/{}?statistics=true",
        encode_project_path(&path)
    );
    let value = get_json(&client, &url, ImportProvider::Gitlab, request.token).await?;
    let clone_url = json_string(&value, &["http_url_to_repo"]).ok_or_else(|| {
        ImportError::Upstream("source forge did not return a clone url".to_string())
    })?;
    let owner = json_string(&value, &["namespace", "full_path"])
        .or_else(|| json_string(&value, &["namespace", "path"]))
        .unwrap_or_else(|| path.split('/').next().unwrap_or_default().to_string());
    let visibility = json_string(&value, &["visibility"]).unwrap_or_default();
    let has_token = request.token.is_some_and(|token| !token.trim().is_empty());
    Ok(ProbeInfo {
        provider: ImportProvider::Gitlab,
        owner,
        name: json_string(&value, &["name"])
            .or_else(|| json_string(&value, &["path"]))
            .unwrap_or(fallback_name),
        clone_url,
        default_branch: json_string(&value, &["default_branch"]).unwrap_or_else(|| "main".into()),
        is_private: visibility == "private",
        description: json_string(&value, &["description"]),
        size_bytes: json_i64(&value, &["statistics", "disk_size_bytes"]),
        owner_external_id: json_string(&value, &["namespace", "id"]),
        owner_avatar_url: json_string(&value, &["namespace", "avatar_url"]),
        credential_username: has_token.then(|| {
            ImportProvider::Gitlab
                .default_credential_username()
                .to_string()
        }),
    })
}