_lp_pure_theme_activate() {
    local lp_terminal_format

    #
    # Easy to use colors.
    #
    local lp_terminal_format af_color='' ab_color=''

    # Colors: variables are local so they will have a value only
    # during config loading and will not conflict with other values
    # with the same names defined by the user outside the config.
    local BOLD="${_LP_OPEN_ESC}${_LP_TI_BOLD-}${_LP_CLOSE_ESC}"

    # Foreground colors
    __lp_foreground_color 0
    local BLACK="${_LP_OPEN_ESC}${af_color}${_LP_CLOSE_ESC}"
    local BOLD_GRAY="${_LP_OPEN_ESC}${_LP_TI_BOLD-}${af_color}${_LP_CLOSE_ESC}"

    __lp_foreground_color 1
    local RED="${_LP_OPEN_ESC}${af_color}${_LP_CLOSE_ESC}"
    local BOLD_RED="${_LP_OPEN_ESC}${_LP_TI_BOLD-}${af_color}${_LP_CLOSE_ESC}"
    __lp_foreground_color 0
    __lp_background_color 1
    local WARN_RED="${_LP_OPEN_ESC}${af_color}${ab_color}${_LP_CLOSE_ESC}"
    __lp_foreground_color 7
    local CRIT_RED="${_LP_OPEN_ESC}${_LP_TI_BOLD-}${af_color}${ab_color}${_LP_CLOSE_ESC}"
    __lp_foreground_color 3
    local DANGER_RED="${_LP_OPEN_ESC}${_LP_TI_BOLD-}${af_color}${ab_color}${_LP_CLOSE_ESC}"

    __lp_foreground_color 2
    local GREEN="${_LP_OPEN_ESC}${af_color}${_LP_CLOSE_ESC}"
    local BOLD_GREEN="${_LP_OPEN_ESC}${_LP_TI_BOLD-}${af_color}${_LP_CLOSE_ESC}"

    __lp_foreground_color 3
    local YELLOW="${_LP_OPEN_ESC}${af_color}${_LP_CLOSE_ESC}"
    local BOLD_YELLOW="${_LP_OPEN_ESC}${_LP_TI_BOLD-}${af_color}${_LP_CLOSE_ESC}"

    __lp_foreground_color 4
    local BLUE="${_LP_OPEN_ESC}${af_color}${_LP_CLOSE_ESC}"
    local BOLD_BLUE="${_LP_OPEN_ESC}${_LP_TI_BOLD-}${af_color}${_LP_CLOSE_ESC}"

    __lp_foreground_color 5
    local PURPLE="${_LP_OPEN_ESC}${af_color}${_LP_CLOSE_ESC}"
    local MAGENTA="${PURPLE}"
    local PINK="${_LP_OPEN_ESC}${_LP_TI_BOLD-}${af_color}${_LP_CLOSE_ESC}"
    local BOLD_PURPLE="${PINK}"
    local BOLD_MAGENTA="${PINK}"

    __lp_foreground_color 6
    local CYAN="${_LP_OPEN_ESC}${af_color}${_LP_CLOSE_ESC}"
    local BOLD_CYAN="${_LP_OPEN_ESC}${_LP_TI_BOLD-}${af_color}${_LP_CLOSE_ESC}"

    __lp_foreground_color 7
    local WHITE="${_LP_OPEN_ESC}${af_color}${_LP_CLOSE_ESC}"
    local BOLD_WHITE="${_LP_OPEN_ESC}${_LP_TI_BOLD-}${af_color}${_LP_CLOSE_ESC}"

    # NO_COL is special: it will be used at runtime, not just during config loading
    NO_COL="${_LP_OPEN_ESC}${_LP_TI_RESET-}${_LP_CLOSE_ESC}"

    #
    # End of colors section.
    #

    # Configuration variables.
    LP_PURE_GIT_DIRTY=${LP_PURE_GIT_DIRTY:-"*"}
    LP_PURE_GIT_DOWN_ARROW=${LP_PURE_GIT_DOWN_ARROW:-"⇣"}
    LP_PURE_GIT_UP_ARROW=${LP_PURE_GIT_UP_ARROW:-"⇡"}
    LP_PURE_MARK_JOBS=${LP_PURE_MARK_JOBS:-"✦"}
    LP_PURE_COLOR_JOBS=${LP_PURE_COLOR_JOBS:-$RED}

    # Config with a direct counterpart in LP.
    LP_MARK_DEFAULT="❯"
    LP_MARK_STASH="≡"

    # Enable the few features implemented by Pure.
    LP_RUNTIME_THRESHOLD=5
    LP_ENABLE_JOBS=1
    LP_ENABLE_RUNTIME=1
    LP_ENABLE_VIRTUALENV=1
    LP_ENABLE_TITLE=1
    LP_ENABLE_COLOR=1
    LP_ENABLE_ERROR=1

    # Disable almost all features.
    LP_USER_ALWAYS=0
    LP_ENABLE_PERM=0
    LP_ENABLE_SHORTEN_PATH=0
    LP_ENABLE_PROXY=0
    LP_ENABLE_TEMP=0
    LP_ENABLE_DETACHED_SESSIONS=0
    LP_ENABLE_LOAD=0
    LP_ENABLE_BATT=0
    LP_ENABLE_GIT=1
    LP_ENABLE_SVN=0
    LP_ENABLE_FOSSIL=0
    LP_ENABLE_HG=0
    LP_HG_COMMAND=0
    LP_ENABLE_BZR=0
    LP_ENABLE_TIME=0
    LP_TIME_ANALOG=0
    LP_ENABLE_RUNTIME_BELL=0
    LP_ENABLE_NODE_VENV=0
    LP_ENABLE_RUBY_VENV=0
    LP_ENABLE_TERRAFORM=0
    LP_ENABLE_CONTAINER=0
    LP_ENABLE_SCLS=0
    LP_ENABLE_AWS_PROFILE=0
    LP_ENABLE_VCS_ROOT=0
    LP_ENABLE_SCREEN_TITLE=0
    LP_ENABLE_TITLE_COMMAND=0
    LP_ENABLE_SSH_COLORS=0
    LP_DISABLED_VCS_PATHS=0
    LP_ENABLE_SUDO=0
    LP_ENABLE_DIRSTACK=0
    LP_ENABLE_KUBECONTEXT=0
    LP_ENABLE_KUBE_NAMESPACE=0
    LP_ENABLE_CMAKE=0
    LP_ENABLE_SHLVL=0
    LP_ENABLE_WIFI_STRENGTH=0

    LP_COLOR_PATH="$BLUE"
    LP_COLOR_PATH_SEPARATOR="$BLUE"
    LP_COLOR_PATH_VCS_ROOT="$BOLD"
    LP_COLOR_PATH_LAST_DIR="$BOLD"
    LP_COLOR_PATH_ROOT="$BOLD_YELLOW"

    LP_COLOR_ERR="$RED"
    LP_COLOR_MARK="$MAGENTA"

    lp_terminal_format 242 -1 0 0 15 -1
    LP_COLOR_USER_LOGGED="$lp_terminal_format"
    LP_COLOR_USER_ALT="$BOLD"
    LP_COLOR_USER_ROOT="$BOLD_YELLOW"

    lp_terminal_format 242 -1 0 0 15 -1
    LP_COLOR_HOST="$lp_terminal_format"

    lp_terminal_format 242 -1 0 0 15 -1
    LP_COLOR_UP="$lp_terminal_format"
    LP_COLOR_COMMITS="$CYAN"
    LP_COLOR_COMMITS_BEHIND="$CYAN"
    LP_COLOR_CHANGES="$CYAN"
    LP_COLOR_DIFF="$CYAN"

    LP_COLOR_RUNTIME="$YELLOW"
    LP_COLOR_VIRTUALENV="$CYAN"

    # The user or connection type is not expected to change from inside the
    # shell, so we build this just once.
    if _lp_username_color; then
        LP_USER="$lp_username_color"
    else
        LP_USER=
    fi

    if _lp_hostname_color ; then
        LP_HOST="$lp_hostname_color "
    else
        LP_HOST=
    fi
}

_lp_pure_theme_directory() {
    local lp_path_format
    _lp_path_format "$LP_COLOR_PATH" "$LP_COLOR_PATH_LAST_DIR" "$LP_COLOR_PATH_VCS_ROOT" "$LP_COLOR_PATH_SHORTENED" "/" "$LP_COLOR_PATH_SEPARATOR"

    LP_PWD="${lp_path_format}${NO_COL}"
}

_lp_pure_theme_prompt() {
    if _lp_jobcount_color; then
        LP_JOBS=" ${LP_PURE_COLOR_JOBS}${LP_PURE_MARK_JOBS}${NO_COL}"
    else
        LP_JOBS=
    fi

    if _lp_python_env_color; then
        LP_VENV="$lp_python_env_color "
    else
        LP_VENV=
    fi

    if _lp_runtime_color; then
        LP_RUNTIME=" $lp_runtime_color"
    else
        LP_RUNTIME=
    fi

    if _lp_error_color; then
        LP_ERR="$lp_error_color"
    else
        LP_ERR=
    fi

    if _lp_find_vcs && _lp_pure_vcs; then
        LP_VCS=" $lp_vcs_details_color"
    else
        LP_VCS=
    fi

    # No smart mark.
    LP_MARK="${LP_MARK_DEFAULT}${NO_COL}"

    _lp_pure_theme_prompt_template
}


_lp_pure_theme_prompt_template() {
    if [[ -f "${LP_PS1_FILE-}" ]]; then
        # shellcheck source=liquid.ps1
        source "$LP_PS1_FILE"
    fi

    if [[ -z "${LP_PS1-}" ]]; then
        PS1="${LP_USER}${LP_HOST}${LP_PWD}${LP_VCS}${LP_RUNTIME}\n${LP_VENV}${LP_JOBS}"

        if [[ -n "${LP_ERR}" ]] ; then
            PS1+="${LP_COLOR_ERR}${LP_MARK} "
        else
            PS1+="${LP_COLOR_MARK}${LP_MARK} "
        fi

        # Get the core sections without prompt escapes and make them into a title.
        _lp_formatted_title "${LP_USER}${LP_HOST}${lp_path-}${LP_MARK}"
    else
        PS1=$LP_PS1
    fi
}

_lp_pure_vcs() {
    local branch
    if _lp_vcs_branch; then
        branch="$lp_vcs_branch"

    # Pure does not handle booknmarks or tags.
    #     if _lp_vcs_bookmark; then
    #         branch+=": $lp_vcs_bookmark"
    #     fi
    # elif _lp_vcs_bookmark; then
    #     branch="$lp_vcs_bookmark"
    # elif _lp_vcs_tag; then
    #     branch="tag: $lp_vcs_tag"
    else
        _lp_vcs_commit_id
        branch="${lp_vcs_commit_id:0:7}"
    fi

    lp_vcs_details_color="$LP_COLOR_UP"

    local has_commit=
    if _lp_vcs_commits_off_remote; then
        lp_vcs_details_color="$LP_COLOR_COMMITS_BEHIND"
        if [[ "$lp_vcs_commit_ahead" -ne "0" && "$lp_vcs_commit_behind" -ne "0" ]]; then
            has_commit="${LP_COLOR_COMMITS}${LP_PURE_GIT_UP_ARROW}{NO_COL}${LP_COLOR_COMMITS_BEHIND}${LP_PURE_GIT_DOWN_ARROW}${NO_COL}"
        elif [[ "$lp_vcs_commit_ahead" -ne "0" ]]; then
            has_commit="${LP_COLOR_COMMITS}${LP_PURE_GIT_UP_ARROW}${NO_COL}"
            lp_vcs_details_color="$LP_COLOR_COMMITS"
        elif [[ "$lp_vcs_commit_behind" -ne "0" ]]; then
            has_commit="${LP_COLOR_COMMITS_BEHIND}${LP_PURE_GIT_DOWN_ARROW}${NO_COL}"
        fi
    fi

    local ret has_lines=
    if _lp_vcs_uncommitted_files; then
        _lp_vcs_unstaged_lines; ret=$?
        # Only show unstaged changes if the VCS supports staging, otherwise
        # show uncommitted changes
        if (( ret == 0 )); then
            has_lines="${LP_PURE_GIT_DIRTY}"
        elif (( ret == 1 )); then
            has_lines=""
        else
            _lp_vcs_uncommitted_lines
            has_lines="${LP_PURE_GIT_DIRTY}"
        fi
        lp_vcs_details_color="$LP_COLOR_CHANGES"
    fi

    lp_vcs_details_color+="$branch"
    if [[ -n "$has_lines" || -n "$has_commit" ]]; then
        lp_vcs_details_color+="${NO_COL}"
        if [[ -n "$has_lines" ]]; then
            lp_vcs_details_color+="${LP_COLOR_DIFF}${has_lines}${NO_COL}${has_commit}"
        fi
        lp_vcs_details_color+="${has_commit}"
    fi

    if _lp_vcs_head_status; then
        lp_vcs_details_color+=" $LP_COLOR_CHANGES$lp_vcs_head_status"
        if [[ -n "${lp_vcs_head_details-}" ]]; then
            lp_vcs_details_color+=" ${lp_vcs_head_details}"
        fi
    fi

    if _lp_vcs_stash_count; then
        lp_vcs_details_color+=" $LP_COLOR_COMMITS$LP_MARK_STASH"
    fi

    # Pure does not show untracked files.
    # if _lp_vcs_untracked_files; then
    #     lp_vcs_details_color+="$LP_COLOR_CHANGES$LP_MARK_UNTRACKED"
    # fi

    lp_vcs_details_color+="$NO_COL"
}