/**
 * GiteaClient - Low-level API wrapper for Gitea Git Hosting
 */

/**
 * Helper to ensure the base URL always points to the Gitea API root (/api/v1)
 * @return {string} Normalized API base URL
 */
function getGiteaApiBaseUrl_() {
  const config = getGiteaConfig();
  let baseUrl = config.baseUrl.replace(/\/$/, ''); // Remove trailing slash
  
  // Ensure the URL ends with /api/v1
  if (!baseUrl.endsWith('/api/v1')) {
    baseUrl += '/api/v1';
  }
  
  return baseUrl;
}

function giteaRequest_(method, path, payload = null) {
  const apiBaseUrl = getGiteaApiBaseUrl_();
  const config = getGiteaConfig();
  
  // Ensure path starts with a single slash
  const normalizedPath = path.startsWith('/') ? path : '/' + path;
  const url = `${apiBaseUrl}${normalizedPath}`;
  
  console.log(`Gitea Request: [${method}] ${url}`);
  
  const options = {
    method: method,
    headers: {
      'Authorization': `token ${config.token}`,
      'Content-Type': 'application/json'
    },
    muteHttpExceptions: true
  };

  if (payload) {
    options.payload = JSON.stringify(payload);
  }

  try {
    const response = UrlFetchApp.fetch(url, options);
    const code = response.getResponseCode();
    const rawContent = response.getContentText();
    
    let json;
    try {
      json = JSON.parse(rawContent);
    } catch (e) {
      json = null; // Not a JSON response
    }

    if (code >= 200 && code < 300) {
      return { ok: true, data: json || rawContent };
    }
    
    // Return structured error with raw body if JSON parsing failed
    return { 
      ok: false, 
      message: json && json.message ? json.message : `Gitea API Error ${code}`, 
      code: code,
      rawBody: rawContent 
    };
  } catch (e) {
    return { ok: false, message: `Gitea Connection Error: ${e.message}` };
  }
}

function getGiteaRepo() {
  const config = getGiteaConfig();
  // Path is relative to /api/v1
  return giteaRequest_('GET', `/repos/${config.owner}/${config.repo}`);
}

function createGiteaIssue(title, body) {
  const config = getGiteaConfig();
  return giteaRequest_('POST', `/repos/${config.owner}/${config.repo}/issues`, {
    title: title,
    body: body
  });
}

function createOrUpdateRepoFile(path, content, message, branch) {
  const config = getGiteaConfig();
  const targetBranch = branch || config.branch;
  
  // Gitea requires SHA for updates. This is a simplified boilerplate.
  return giteaRequest_('POST', `/repos/${config.owner}/${config.repo}/contents/${path}`, {
    content: content,
    message: message,
    branch: targetBranch
  });
}

function createReleaseTag(tagName, name, body, target) {
  const config = getGiteaConfig();
  return giteaRequest_('POST', `/repos/${config.owner}/${config.repo}/releases`, {
    tag_name: tagName,
    name: name,
    body: body,
    target_commitish: target || config.branch
  });
}