text: import os
  from io import StringIO
  from typing import List, Optional, Tuple
  
  import yaml
  
  from opencoverage.models import ROOT_PROJECT
  from opencoverage.settings import Settings
  
  from . import types
  from .clients import SCMClient
  from .database import Database
  from .parser import parse_diff, parse_raw_coverage_data
  from .utils import run_async
  
  
  class CoverageReporter:
      def __init__(
          self,
          *,
          settings: Settings,
          db: Database,
          scm: SCMClient,
          organization: str,
          repo: str,
          branch: str,
          commit: str,
          project: Optional[str] = None,
      ):
          self.settings = settings
          self.db = db
          self.scm = scm
          self.organization = organization
          self.repo = repo
          self.branch = branch
          self.commit = commit
          self.project = project
  
      async def __call__(
          self,
          *,
          coverage_data: bytes,
      ) -> None:
          coverage = await run_async(parse_raw_coverage_data, coverage_data)
  
          config = await self.get_coverage_configuration()
          project_config = None
          if self.project is not None and config is not None:
              # check to see if we need to fix paths in report
              if (
                  config is not None
                  and config.projects is not None
                  and self.project in config.projects
              ):
                  project_config = config.projects[self.project]
                  if project_config.base_path is not None:
                      # fix paths in coverage report
                      for filepath in [f for f in coverage["file_coverage"].keys()]:
                          new_filepath = os.path.join(project_config.base_path, filepath)
                          coverage["file_coverage"][new_filepath] = coverage[
                              "file_coverage"
                          ][filepath]
                          del coverage["file_coverage"][filepath]
  
          await self.db.save_coverage(
              organization=self.organization,
              repo=self.repo,
              branch=self.branch,
              commit_hash=self.commit,
              coverage=coverage,
              project=self.project,
          )
  
          pulls = await self.scm.get_pulls(self.organization, self.repo, self.commit)
          for pull in pulls:
              if self.branch == pull.base:
                  continue
              await self.update_pull(pull, coverage, config, project_config)
  
      def hits_target_diff_coverage(
          self,
          config: Optional[types.CoverageConfiguration],
          project_config: Optional[types.CoverageConfigurationProject],
          rate: float,
      ) -> bool:
          diff_target = None
          # check coverage targets
          if config is not None:
              diff_target = config.diff_target
              if project_config is not None:
                  if project_config.diff_target is not None:
                      diff_target = project_config.diff_target
  
          if diff_target is not None:
              try:
                  return rate >= float(diff_target.strip("%"))
              except ValueError:
                  ...
          return True
  
      def hits_target_coverage(
          self,
          config: Optional[types.CoverageConfiguration],
          project_config: Optional[types.CoverageConfigurationProject],
          rate: float,
      ) -> bool:
          target = None
          # check coverage targets
          if config is not None:
              target = config.target
              if project_config is not None:
                  if project_config.target is not None:
                      target = project_config.target
  
          if target is not None:
              try:
                  return rate >= float(target.strip("%"))
              except ValueError:
                  ...
          return True
  
      async def get_coverage_configuration(self) -> Optional[types.CoverageConfiguration]:
          if await self.scm.file_exists(
              self.organization, self.repo, self.commit, "cov.yaml"
          ):
              data = b""
              async for chunk in self.scm.download_file(
                  self.organization, self.repo, self.commit, "cov.yaml"
              ):
                  data += chunk
              text = data.decode("utf-8")
              data = yaml.safe_load(StringIO(text))
              return types.CoverageConfiguration.parse_obj(data)
          return None
  
      @property
      def report_url(self) -> str:
          return f"{self.settings.public_url}/{self.organization}/repos/{self.repo}/commits/{self.commit}/report"
  
      def get_diff_url(self, pull: types.Pull) -> str:
          return f"{self.settings.public_url}/{self.organization}/repos/{self.repo}/pulls/{pull.id}/{self.commit}/report"  # noqa
  
      async def get_coverage_comment(
          self,
          diff_data: List[types.DiffCoverage],
          coverage: types.CoverageData,
          diff_line_rate: float,
          pull: types.Pull,
      ) -> str:
          hits = 0
          misses = 0
          for ddata in diff_data:
              hits += ddata["hits"]
              misses += ddata["misses"]
  
          project_text = ""
          if self.project not in (ROOT_PROJECT, None):
              project_text = f"`{self.project}`"
  
          diff_url = self.get_diff_url(pull)
          return f"""
  ## Coverage Report {project_text}
  
  Overall coverage: *{(100 * coverage["line_rate"]):.1f}%*
  [Coverage report]({self.report_url})
  
  
  ```diff
  @@           Coverage Diff            @@
  ========================================
  - Coverage    {(diff_line_rate * 100):.1f}%
  ========================================
  + Hits        {hits}
  - Misses      {misses}
  
  ```
  [Diff coverage report]({diff_url})
  """  # noqa
  
      def get_line_rate(
          self, diff_data: List[types.DiffCoverage], coverage: types.CoverageData
      ) -> Tuple[List[types.DiffCoverage], float]:
          total = 0
          covered = 0
          covered_diff_data = []
          for ddata in diff_data:
              try:
                  lines = coverage["file_coverage"][ddata["filename"]]["lines"]
              except KeyError:
                  # if it isn't in the file coverage report, we don't care about it
                  continue
  
              file_total = 0
              file_covered = 0
              ddata["hits"] = ddata["misses"] = 0
              for line_no, hits in lines.items():
                  if line_no in ddata["lines"]:
                      file_total += 1
                      if hits:
                          file_covered += 1
                          ddata["hits"] += 1
                      else:
                          ddata["misses"] += 1
  
              if file_total > 0:
                  ddata["line_rate"] = file_covered / file_total
              else:
                  ddata["line_rate"] = 1.0
              total += file_total
              covered += file_covered
              covered_diff_data.append(ddata)
  
          if total > 0:
              return covered_diff_data, covered / total
          return covered_diff_data, 1.0
  
      async def update_pull(
          self,
          pull: types.Pull,
          coverage: types.CoverageData,
          config: Optional[types.CoverageConfiguration],
          project_config: Optional[types.CoverageConfigurationProject],
      ):
          diff = await self.scm.get_pull_diff(self.organization, self.repo, pull.id)
          diff_data = await run_async(parse_diff, diff)
          diff_data, diff_line_rate = self.get_line_rate(diff_data, coverage)
  
          check_id = await self.scm.create_check(
              self.organization, self.repo, self.commit, details_url=self.get_diff_url(pull)
          )
  
          coverage_diff = await self.db.get_coverage_diff(
              organization=self.organization,
              repo=self.repo,
              branch=self.branch,
              commit_hash=self.commit,
              project=self.project,
              pull=pull,
          )
          text = await self.get_coverage_comment(diff_data, coverage, diff_line_rate, pull)
  
          if coverage_diff is None:
              # check to see if there is already a comment on the PR with a different diff
              # with different commit hash
              coverage_diff = await self.db.get_coverage_diff(
                  organization=self.organization,
                  repo=self.repo,
                  branch=self.branch,
                  project=self.project,
                  pull=pull,
              )
              if coverage_diff is None:
                  comment_id = await self.scm.create_comment(
                      self.organization, self.repo, pull.id, text
                  )
              else:
                  comment_id = coverage_diff.comment_id
                  await self.scm.update_comment(
                      self.organization, self.repo, coverage_diff.comment_id, text
                  )
  
              await self.db.create_coverage_diff(
                  organization=self.organization,
                  repo=self.repo,
                  branch=self.branch,
                  commit_hash=self.commit,
                  project=self.project,
                  pull=pull,
                  pull_diff=diff_data,
                  check_id=check_id,
                  comment_id=comment_id,
                  line_rate=diff_line_rate,
              )
          else:
              await self.scm.update_comment(
                  self.organization, self.repo, coverage_diff.comment_id, text
              )
              coverage_diff.pull_diff = diff_data
              coverage_diff.line_rate = diff_line_rate  # type: ignore
              await self.db.update_coverage_diff(report=coverage_diff)
  
          success = True
          check_text = None
          if not self.hits_target_coverage(
              config, project_config, 100 * coverage["line_rate"]
          ):
              success = False
              check_text = (
                  f'Misses target line rate with {(100 * coverage["line_rate"]):.1f}%'
              )
          elif not self.hits_target_diff_coverage(
              config, project_config, 100 * diff_line_rate
          ):
              success = False
              check_text = (
                  f"Misses target diff line rate with {(100 * diff_line_rate):.1f}%"
              )
          await self.scm.update_check(
              self.organization,
              self.repo,
              check_id,
              running=False,
              success=success,
              text=check_text,
          )
  