class Fbe::Graph

def initialize(token:, host: 'api.github.com')
  @token = token
  http = HTTP.new(token, host)
  @client = GraphQL::Client.new(schema: GraphQL::Client.load_schema(http), execute: http)
  @client.allow_dynamic_queries = true
end

def query(query_string)
  result = @client.query(@client.parse(query_string))
  result.data
end

def resolved_conversations(owner, name, number)
  result = query(
    <<~GRAPHQL
      {
        repository(owner: "#{owner}", name: "#{name}") {
          pullRequest(number: #{number}) {
            reviewThreads(first: 100) {
              nodes {
                id
                isResolved
                comments(first: 100) {
                  nodes {
                    id
                    body
                    author {
                      login
                    }
                    createdAt
                  }
                }
              }
            }
          }
        }
      }
    GRAPHQL
  )
  result&.to_h&.dig('repository', 'pullRequest', 'reviewThreads', 'nodes')&.select do |thread|
    thread['isResolved']
  end || []
end

def total_commits(owner, name, branch)
  result = query(
    <<~GRAPHQL
      {
        repository(owner: "#{owner}", name: "#{name}") {
          ref(qualifiedName: "#{branch}") {
            target {
              ... on Commit {
                history {
                  totalCount
                }
              }
            }
          }
        }
      }
    GRAPHQL
  )
  result.repository.ref.target.history.total_count
end

def total_issues_and_pulls(owner, name)
  result = query(
    <<~GRAPHQL
      {
        repository(owner: "#{owner}", name: "#{name}") {
          issues {
            totalCount
          }
          pullRequests {
            totalCount
          }
        }
      }
    GRAPHQL
  ).to_h
  {
    'issues' => result.dig('repository', 'issues', 'totalCount') || 0,
    'pulls' => result.dig('repository', 'pullRequests', 'totalCount') || 0
  }
end