local common_options=(
	"-C[Change to the given directory before executing the rest of the program]:directory:_path_files -/"
	"--color=[Flag to force enable or disable terminal colors]:color flag:(auto always never)"
	{-h,--help}"[Print help information]"
)

_git-branchless() {
	local line state ret

	_arguments -C \
		"1:Command:->cmds" \
		"*::arg:->args"

	case "$state" in
		cmds)
			_values "git-branchless command" \
				"amend[Amend the current HEAD commit]" \
				"bug-report[Gather information about recent operations to upload as part of a bug report]" \
				"gc[Run internal garbage collection]" \
				"hide[Hide the provided commits from the smartlog]" \
				"init[Initialize the branchless workflow for this repository]" \
				"move[Move a subtree of commits from one location to another]" \
				"next[Move to a later commit in the current stack]" \
				"prev[Move to an earlier commit in the current stack]" \
				"query[Query the commit graph using the \"revset\" language and print matching commits]" \
				"repair[Restore internal invariants by reconciling the internal operation log with the state of the Git repository]" \
				"restack[Fix up commits abandoned by a previous rewrite operation]" \
				"record[Create a commit by interactively selecting which changes to include]" \
				"reword[Reword commits]" \
				"smartlog[Display a nice graph of the commits you've recently worked on]" \
				"submit[Push commits to a remote]" \
				"switch[Switch to the provided branch or commit]" \
				"sync[Move any local commit stacks on top of the main branch]" \
				"test[Run a command on each commit in a given set and aggregate the results]" \
				"undo[Browse or return to a previous state of the repository]" \
				"unhide[Unhide previously-hidden commits from the smartlog]" \
				"wrap[Wrap a Git command inside a branchless transaction]" \
				"help[Print this message or the help of the given subcommand(s)]"
			ret=0
			;;
		args)
			_call_function ret "_git-branchless-${line[1]}" || _message "no completion for ${line[1]}"
			;;
	esac
	return ret
}

_git-branchless-amend() {
	_arguments -s \
		"${common_options[@]}" \
		{-f,--force-rewrite}"[Force moving public commits, even though other people may have access to those commits]" \
		{-m,--merge}"[Attempt to resolve merge conflicts, if any]"
	return 0
}

_git-branchless-bug-report() {
	_arguments -s "${common_options[@]}"
	return 0
}

_git-branchless-gc() {
	_arguments -s "${common_options[@]}"
	return 0
}

_git-branchless-hide() {
	_arguments -s \
		"${common_options[@]}" \
		{-D,--delete-branches}"[Also delete any branches that are abandoned as a result of this hide]" \
		{-r,--recursive}"[Also recursively hide all visible children commits of the provided commits]" \
		"*::revsets:__git_commit_ranges"
	return 0
}

_git-branchless-init() {
	_arguments -s \
		"${common_options[@]}" \
		"--uninstall[Uninstall the branchless workflow instead of initializing it]" \
		"--main-branch[Use the provided name as the name of the main branch]:main branch:__git_branch_names"
	return 0
}

_git-branchless-move() {
	_arguments -s \
		"${common_options[@]}" \
		{-s,--source=}"[The source commit to move]:source:__git_recent_commits" \
		{-b,--base=}"[A commit inside a subtree to move]:base:__git_recent_commits" \
		"*"{-x,--exact=}"[A set of specific commits to move]:base:__git_recent_commits" \
		{-d,--dest=}"[The destination commit to move all source commits onto]:base:__git_recent_commits" \
		{-m,--merge}"[Attempt to resolve merge conflicts, if any]" \
		{-I,--insert}"[Insert the subtree between the destination and it's children, if any]"
	return 0
}

_git-branchless-next() {
	_arguments -s \
		"${common_options[@]}" \
		{-b,--branch}"[Move the specified number of branches rather than commits]" \
		{-o,--oldest}"[When encountering multiple next commits, choose the oldest]" \
		{-n,--newest}"[When encountering multiple next commits, choose the newest]" \
		{-i,--interactive}"[When encountering multiple next commits, interactively prompt which to advance to]" \
		{-m,--merge}"[If the local changes conflict with the destination commit, attempt to merge them]" \
		{-f,--force}"[If the local changes conflict with the destination commit, discard them (Use with caution!)]" \
		"::num commits:_numbers -u commit -d 1"
	return 0
}

# TODO: factor with next
_git-branchless-prev() {
	_arguments -s \
		"${common_options[@]}" \
		{-b,--branch}"[Move the specified number of branches rather than commits]" \
		{-o,--oldest}"[When encountering multiple next commits, choose the oldest]" \
		{-n,--newest}"[When encountering multiple next commits, choose the newest]" \
		{-i,--interactive}"[When encountering multiple next commits, interactively prompt which to advance to]" \
		{-m,--merge}"[If the local changes conflict with the destination commit, attempt to merge them]" \
		{-f,--force}"[If the local changes conflict with the destination commit, discard them (Use with caution!)]" \
		"::num commits:_numbers -u commit -d 1"
	return 0
}

_git-branchless-query() {
	_arguments -s \
		"${common_options[@]}" \
		{-b,--branches}"[Print the branches attached to the resulting commits, rather than the commits themselves]" \
		{-r,--raw}"[Print the OID of each matching commit, one per line]" \
		"::revsets:__git_commit_ranges"
	return 0
}

_git-branchless-record() {
	_arguments -s \
		"${common_options[@]}" \
		{-m,--message=}"[The commit message to use]:message" \
		{-i,--interactive}"[Select changes to include interactively, rather than using the current staged/unstaged changes]" \
		{-d,--detach}"[Detach the current branch before committing]" \
		"::revsets:__git_commit_ranges"
	return 0
}

_git-branchless-repair() {
	_arguments -s "${common_options[@]}"
	return 0
}

_git-branchless-restack() {
	_arguments -s \
		"${common_options[@]}" \
		{-f,--force-rewrite}"[Force moving public commits, even though other people may have access to those commits]" \
		{-m,--merge}"[Attempt to resolve merge conflicts, if any]" \
		"*::revsets:__git_commit_ranges"
	return 0
}

_git-branchless-reword() {
	_arguments -s \
		"${common_options[@]}" \
		{-f,--force-rewrite}"[Force moving public commits, even though other people may have access to those commits]" \
		{-m,--message=}"[Message to apply to commits]:message" \
		{-d,--discard}"[Throw away the original commit messages]" \
		"--fixup=[ A commit to \"fix up\"]:commit:__git_recent_commits" \
		"*::revsets:__git_commit_ranges"
	return 0
}

_git-branchless-smartlog() {
	_arguments -s \
		"${common_options[@]}" \
		"::revset:__git_commit_ranges"
	return 0
}

_git-branchless-submit() {
	_arguments -s \
		"${common_options[@]}" \
		{-c,--create}"[If there is no remote branch for a given local branch, create the remote branch by pushing the local branch to the default push remote]" \
		"::revset:__git_commit_ranges"
	return 0
}

_git-branchless-switch() {
	_arguments -s \
		"${common_options[@]}" \
		{-c,--create}"[When checking out the target commit, also create a branch with the provided name pointing to that commit]:branch name" \
		{-f,--force}"[Forcibly switch commits, discarding any working copy changes if necessary]" \
		{-m,--merge}"[If the current working copy changes do not apply cleanly to the target commit, start merge conflict resolution instead of aborting]" \
		"::target:__git_commits_prefer_recent"
	return 0
}

_git-branchless-sync() {
	_arguments -s \
		"${common_options[@]}" \
		{-p,--pull}'[Run `git fetch` to update remote references before carrying out the sync]' \
		{-f,--force-rewrite}"[Force moving public commits, even though other people may have access to those commits]" \
		{-m,--merge}"[Attempt to resolve merge conflicts, if any]" \
		"*::revset:__git_commit_ranges"
	return 0
}

_git-branchless-test() {
	local line state

	_arguments -C -s \
		"${common_options[@]}" \
		"1:git-branchless test subcommand:->cmds" \
		"*::arg:->args"

	case "$state" in
		cmds)
			_values "git-branchless test command" \
				"run[Run a given command on a set of commits and present the successes and failures]" \
				"show[Show the results of a set of previous test runs]" \
				"clean[Clean any cached test results]" \
				"help[Print this message or the help of the given subcommand(s)]"
			ret=0
			;;
		args)
			_call_function ret "_git-branchless-test-${line[1]}"
			;;
	esac

	return ret
}

_git-branchless-test-clean() {
	_arguments -s \
		"${common_options[@]}" \
		"::revset:__git_commit_ranges"
	return 0
}

_git-branchless-test-run() {
	_arguments -s \
		"${common_options[@]}" \
		{-x,--exec=}'[An ad-hoc command to execute on each commit]:exec:_path_commands' \
		{-v,--verbose}"[Show the test output as well]" \
		{-s,--strategy=}"[How to execute the tests]:strategy:(working-copy worktree)" \
		{-j,--jobs=}"[How many jobs to execute in parallel]:jobs:_numbers -u jobs" \
		"::revset:__git_commit_ranges"
	return 0
}

_git-branchless-test-show() {
	_arguments -s \
		"${common_options[@]}" \
		{-x,--exec=}'[An ad-hoc command to execute on each commit]:exec:_path_commands' \
		{-v,--verbose}"[Show the test output as well]" \
		"::revset:__git_commit_ranges"
	return 0
}

_git-branchless-undo() {
	_arguments -s \
		"${common_options[@]}" \
		{-i,--interactive}"[Interactively browse through previous states of the repository before selecting one to return to]" \
		{-y,--yes}"[Skip confirmation and apply changes immediately]"
	return 0
}

_git-branchless-unhide() {
	_arguments -s \
		"${common_options[@]}" \
		{-r,--recursive}"[Also recursively unhide all children commits of the provided commits]"
	return 0
}

_git-branchless-wrap() {
	service="git"
	_arguments -s \
		"${common_options[@]}" \
		"*::git command:_git"
	return 0
}

compdef _git-branchless git-branchless