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#!/bin/sh
set -e

exec_hist=/tmp/fzf-interactive_exec-hist
if [ ! -f "$exec_hist" ]; then
	touch "$exec_hist"
fi

case "$1" in
exec)
	uniq "$exec_hist" \
		| grep -v '^$' \
		| fzf \
			--header 'Select or enter a command, {} is previous selection' \
			--bind 'tab:replace-query' \
			--bind 'enter:print-query' \
		| tee -a $exec_hist \
		| sed "s#{}#$2#g"  \
		| sh -s
	exit $?
	;;

_preview)
	case "$(xdg-mime query filetype "$2")" in
	inode/directory) 			exa -la "$2" ;;
	text/*)					head "$2" ;;
	application/javascript)			head "$2" ;;
	application/x-shellscript)		head "$2" ;;
	application/json)			jq "$2" ;;
	application/x-compressed-tar)		tar -tvf "$2" ;;
	application/pdf)			pdftotext "$2" - ;;
	image/*)				mediainfo "$2" ;;
	video/*|audio/*)			mediainfo "$2" ;;
	*)					file "$2" ;;
	esac
	;;
_preview2) # invoke mpv/imv for media files
	case "$(xdg-mime query filetype "$2")" in
	image/*)				swx -f imv "$2" ;;
	video/*|audio/*)			swx -f mpv "$2" ;;
	application/pdf)			swx -f zathura "$2" ;;
	*)					$0 exec "$2" ;;
	esac
	;;

git-branches)
	git rev-parse HEAD > /dev/null 2>&1 || exit 1
	git branch -a --sort=refname --format='%(refname)' \
		| cut -d' ' -f1 \
		| sed 's#^refs/##' \
		| sed 's#^remotes/##' \
		| sed 's#^heads/##' \
		| $0 \
			--ansi --no-sort --reverse --tac \
			--header 'Press ctrl-s to toggle sort' \
			--bind 'ctrl-s:toggle-sort' \
			--preview 'git log --color=always --oneline --graph --date=short {} | head -${LINES}' \
			--preview-window right:70% \
			--bind "ctrl-o:execute(git checkout {})"
	;;

git-tags)
	git rev-parse HEAD > /dev/null 2>&1 || exit 1
		git tag --sort -version:refname \
		| cut -d' ' -f1 \
		| sed 's#^refs/##' \
		| sed 's#^remotes/##' \
		| sed 's#^heads/##' \
		| $0 \
			--ansi --no-sort --reverse \
			--preview 'git show --color=always {} | head -${LINES}' \
			--preview-window right:70%
	;;

git-log)
	git log --color=always --oneline \
		| $0 \
			--ansi --no-sort --reverse \
			--preview 'echo {} | cut -d\  -f1 | xargs git show --color=always --pretty=full --stat --patch' \
			--preview-window right:50% \
		| cut -d' ' -f1 \
		| xargs -r -i git log -1 --pretty=%H {}
	;;

rg)
	shift
	rg $@ --files-with-matches \
		| $0 \
			--header 'Press ctrl-s to toggle sort' \
			--bind 'ctrl-s:toggle-sort' \
			--preview "rg $* --color=always --no-filename --glob='{}' --context=5 --line-number"
	;;

vimwiki)
	shift
	fd -t f -e md "${1:-.*}" "$HOME/wiki" \
		| sed "s#^$HOME/wiki/##" \
		| sed 's#.md$##' \
		| $0 \
			--print-query \
			--preview="cat -n $HOME/wiki/{}.md" \
		| xargs -r -i nvim +VimwikiIndex +VimwikiGoto\ {}
	;;

fd)
	shift
	fd $@ \
		| $0 \
			--ansi --reverse \
			--header 'Press ctrl-p to toggle preview, enter for xdg-open' \
			--bind 'ctrl-p:toggle-preview' \
			--bind "ctrl-space:execute($0 _preview2 {})" \
			--preview "$0 _preview {}" \
			--preview-window ':hidden' \
		| xargs -r xdg-open
	;;

*)
	fzf \
		--bind "ctrl-x:execute(${0} exec {})+accept" "$@" ;;
esac