#!/bin/zsh

if autoload -Uz add-zsh-hook ; then

ZSHU[f_enclave]="${ZSHU[d_var]}/enclave"
[ -f "${ZSHU[f_enclave]}" ] || touch "${ZSHU[f_enclave]}"
[ -s "${ZSHU[f_enclave]}" ] && . "${ZSHU[f_enclave]}"

## <test data>
test_enclave_enter() { echo "you are in $1 enclave" 1>&2 ; }
test_enclave_leave() { echo "you are left $1 enclave" 1>&2 ; }

zstyle ":enclave:box1:path:${HOME}/prj/*" ''
zstyle ":enclave:box1:path:${HOME}/prj/_stale/*" exclude
zstyle ':enclave:box1:env:unset' 'var2'
zstyle ':enclave:box1:env:set' 'var1' 1
zstyle ':enclave:box1:on_enter' test_enclave_enter
zstyle ':enclave:box1:on_leave' test_enclave_leave

zstyle ":enclave:box2:path:${HOME}/doc/*" ''
zstyle ":enclave:box2:path:${HOME}/doc/work/*" exclude
zstyle ':enclave:box2:env:unset' 'var1'
zstyle ':enclave:box2:env:set' 'var2' 1
zstyle ':enclave:box2:on_enter' test_enclave_enter
zstyle ':enclave:box2:on_leave' test_enclave_leave

typeset -g var1=0
typeset -g var2=0
## </test data>

__z_enclave_list() {
    local -aU list=( $(zstyle -L ':enclave:*' \
                       | sed -En "/^zstyle '?:enclave:([^:]+):.*\$/{s//\1/;p;}") )
    printf '%s' "${(j: :)list}"
}

__z_chpwd_enclave() {
    [ -z "${PWD}" ] && return
    ## enclave changed? if no - do nothing
    [ -z "${OLDPWD}" ] && return
    [ "${PWD}" = "${OLDPWD}" ] && return

    local a
    zstyle -s ":enclave:*:path:$PWD" '' a && \
    declare -p a

    ## call on_leave()
    ## unset previously set
    ## set previously set

    env > /tmp/env
}

# zstyle -L ':enclave:*'
# echo


    add-zsh-hook chpwd __z_chpwd_enclave
    __z_chpwd_enclave

else
    echo "enclaves are disabled due to missing hook support" 1>&2
fi