Function getCurrentBranchForcePushState

app/src/lib/rebase.ts:39–68

(
  branchesState: IBranchesState,
  aheadBehind: IAheadBehind | null
)

 * branch should be a force push
 */
export function getCurrentBranchForcePushState(
  branchesState: IBranchesState,
  aheadBehind: IAheadBehind | null
): ForcePushBranchState {
  if (aheadBehind === null) {
    // no tracking branch found
    return ForcePushBranchState.NotAvailable
  }

  const { ahead, behind } = aheadBehind

  if (behind === 0 || ahead === 0) {
    // no a diverged branch to force push
    return ForcePushBranchState.NotAvailable
  }

  const { tip, forcePushBranches } = branchesState

  let canForcePushBranch = false
  if (tip.kind === TipState.Valid) {
    const localBranchName = tip.branch.nameWithoutRemote
    const { sha } = tip.branch.tip
    const foundEntry = forcePushBranches.get(localBranchName)
    canForcePushBranch = foundEntry === sha
  }

  return canForcePushBranch
    ? ForcePushBranchState.Recommended
    : ForcePushBranchState.Available
}