#!/usr/bin/env sh

set -euC

help_text=

help_text="$help_text  install\t[]\t\n"
install () {
    perl Makefile.PL
    make
    make test
    make install
}

help_text="$help_text  dist\t[]\tcreate a source distribution\n"
dist () {
    perl Makefile.PL
    make
    make test
    make dist
}

help_text="$help_text  run_tests\t[args='t/' ...]\tpasses arg to the 'prove' tool\n"
run_tests () {
    if [ $# -gt 0 ]
    then prove -l "$@"
    else prove -l t/
    fi
}

help_text="$help_text  start_dev\t[]\tstarts a hot reloading dev server\n"
start_dev () {
    morbo script/jwebmail
}

help_text="$help_text  logrotate\t[mode=development]\tarchives the current log file\n"
logrotate () {
    mode=${1:-development}
    mv -i "log/$mode.log" "log/${mode}_$(date --iso-8601=minutes).log"
}

help_text="$help_text  linelength\t[[files]]\tchecks documentation files for overly long lines\n"
linelength () {
    files=${1:-'README.md CHANGES.md LICENSE'}
    for file in $files
    do
        fold -s -w 85 "$file" | diff "$file" -
    done
}

help_text="$help_text  follow\t[mode=development]\tfollows the current log file\n"
follow () {
    mode=${1:-development}
    tail -f "log/$mode.log"
}

help_text="$help_text  check_manifest\t[]\tchecks if files in the MANIFEST actually exist\n"
check_manifest () {
    perl -nE 'chomp; say if $_ && !-e' MANIFEST
}

help_text="$help_text  list_deps\t[module=JWebmail]\tlists all non core dependencies of a module\n"
list_deps () {
    module=${1:-JWebmail}
    core="$(corelist -v v5.34.1 | awk '{ print $1 }')"
    deps="$(perl -wE "use lib 'lib'; use Module::Load::Conditional 'requires'; @res = requires '$module'; \$\" = qq(\n); say \$res[0] ? qq(@res) : ''")"

    for dep in $deps
    do
        if ! echo "$core" | grep -qxF "$dep"
        then echo "$dep"
        fi
    done
}

help_text="$help_text  list_translations\t[raw='']\tlists translatable snipptes on a best effort base (incomplete!!)\n"
list_translations () {
    raw=${1-}
    if [ "$raw" ]
    then
        find lib -name '*.pm' -exec grep '\->l(' '{}' '+'
        find templates -name '*.html.ep' -exec grep "l[ (][\"']" '{}' '+'
    else
        p1="$(find lib -name '*.pm' -exec grep '\->l(' '{}' '+' | sed 's/^\(\S*\):.*->l(\([^)]*\)).*$/\1: \2/')"
        p2="$(find templates -name '*.html.ep' -exec grep "l[ (][\"']" '{}' '+' | sed "s/^\\(\\S*\\):.*l[ (][\"']\\([^\"']*\\)[\"'].*$/\\1: '\\2'/")"
        echo "$(echo "$p1"; echo "$p2")" | sort | uniq
    fi
}

help_text="$help_text  rust_extract\t[]\tupdates and gets the rust extract binary\n"
rust_extract () {
    cd extract
    cargo build --release --target=x86_64-unknown-linux-musl
    cp target/x86_64-unknown-linux-musl/release/jwebmail-extract ../bin
    cd ..
}

help_text="$help_text  systemd_unit\t[path=/etc/systemd/system/\$JWM_NAME.service] env(JWM_{NAME,USER,HOME,LOG_LEVEL})\tcreates a systemd unit file\n"
systemd_unit () {
    : "${JWM_NAME=jwebmail}" "${JWM_USER=$USER}" "${JWM_HOME=$(pwd)}" "${JWM_LOG_LEVEL=info}"
    export JWM_NAME JWM_USER JWM_HOME JWM_LOG_LEVEL

    cmd='perl -pe s/\$(\w+)/$ENV{$1}/ga jwebmail.service.tmpl'
    path=${1-/etc/systemd/system/$JWM_NAME.service}
    if [ "$path" = '-' ]
    then $cmd
    else $cmd >|"$path"
    fi
}

help_text="$help_text  compile_python\t[]\tprepare python bytecode files\n"
compile_python () {
    python3 -m compileall script/qmauth.py
}

help () {
    echo "The following actions are available:"
    echo
    printf "$help_text" | expand -t 22,43
    echo
}

cmd=${1-help}
[ $# -gt 0 ] && shift
if LANG=C type "$cmd" 2>/dev/null | grep -q 'function$'
then $cmd "$@"
else echo "unkown commad '$cmd'" >&2; exit 1
fi