#!/bin/sh

BOLD="$(tput bold)"
RED="$(tput setaf 1)"
GREEN="$(tput setaf 2)"
BLUE="$(tput setaf 4)"
NC="$(tput sgr0)"

dgit() {
	git -C "$STOW_DIR/$DOTS_PACKAGE" "$@"
}

printf "%b" "${BOLD}${BLUE}Removing dotfile symlinks...$NC\n\n"
stow -D -d "$STOW_DIR" -t "$HOME" "$DOTS_PACKAGE" || printf "%b" "${RED}Failed to run stow!$NC\n"

printf "%b" "${BOLD}${BLUE}Stashing existing changes...$NC\n"
stash_result=$(dgit stash push)
needs_pop=1
if [ "$stash_result" = "No local changes to save" ]; then
	needs_pop=0
fi
printf "\n"

printf "%b" "${BOLD}${BLUE}Pulling updates from dotfiles repo...$NC\n"
old_commit="$(dgit rev-parse HEAD)"
dgit pull origin main
dgit submodule update --remote --merge
printf "\n"

if [ $needs_pop -eq 1 ]; then
	printf "%b" "${BOLD}${BLUE}Popping stashed changes...$NC\n"
	dgit stash pop
fi
printf "\n"

unmerged_files=$(dgit diff --name-only --diff-filter=U)
if [ -n "$unmerged_files" ]; then
	printf "%b" "${RED}The following files have merge conflicts after popping the stash:$NC\n\n"
	printf "%s" "$unmerged_files\n\n"
	printf "%s" "${BOLD}${BLUE}Reverting to previous commit...$NC"
	dgit checkout "$old_commit"
fi

printf "%b" "${BOLD}${BLUE}Symlinking dotfiles...$NC\n\n"
stow -d "$STOW_DIR" -t "$HOME" "$DOTS_PACKAGE" || printf "%b" "${RED}Failed to run stow!$NC\n"

printf "%b" "${BOLD}${GREEN}Dotfiles synced successfully!$NC\n"