const OUTLINE_API_BASE = 'https://wiki.ghostguild.org/api'

/**
 * Strip HTML tags and truncate to 200 characters at a word boundary.
 * If the stripped text is <= 200 chars, returns it as-is.
 */
export function extractSummary(text) {
  if (!text) return ''

  const stripped = text.replace(/<[^>]*>/g, '').trim()

  if (stripped.length <= 200) return stripped

  const truncated = stripped.slice(0, 200)
  const lastSpace = truncated.lastIndexOf(' ')

  // If no space found at all, return the full 200 chars (single long word)
  if (lastSpace <= 0) return truncated

  return truncated.slice(0, lastSpace)
}

/**
 * Fetch all documents from Outline wiki, paginating through all pages.
 * Throws on any page failure — caller is responsible for abort logic.
 */
export async function fetchAllDocuments() {
  const config = useRuntimeConfig()
  const apiKey = config.outlineApiKey

  if (!apiKey) {
    throw createError({
      statusCode: 500,
      statusMessage: 'Outline API key not configured'
    })
  }

  const documents = []
  let offset = 0
  const limit = 25

  while (true) {
    const response = await fetch(`${OUTLINE_API_BASE}/documents.list`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        Authorization: `Bearer ${apiKey}`
      },
      body: JSON.stringify({ offset, limit })
    })

    if (!response.ok) {
      const errorText = await response.text()
      console.error(`[outline] POST /documents.list offset=${offset} ${response.status} ${errorText}`)
      throw createError({
        statusCode: response.status,
        statusMessage: 'Outline API error'
      })
    }

    const data = await response.json()
    const page = data.data || []
    documents.push(...page)

    if (page.length < limit) break
    offset += limit
  }

  return documents
}

export async function fetchCollections() {
  const config = useRuntimeConfig()
  const apiKey = config.outlineApiKey

  if (!apiKey) {
    throw createError({
      statusCode: 500,
      statusMessage: 'Outline API key not configured'
    })
  }

  const response = await fetch(`${OUTLINE_API_BASE}/collections.list`, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      Authorization: `Bearer ${apiKey}`
    },
    body: JSON.stringify({ limit: 100 })
  })

  if (!response.ok) {
    const errorText = await response.text()
    console.error(`[outline] POST /collections.list ${response.status} ${errorText}`)
    throw createError({
      statusCode: response.status,
      statusMessage: 'Outline API error'
    })
  }

  const data = await response.json()
  const collections = data.data || []
  return new Map(collections.map(c => [c.id, c.name]))
}