#!/usr/bin/env sh
# YES_ZSH

#. ~/sh/echo2 # FIXME
#. ~/sh/note # FIXME

stfu() { ### @-
    ### invoke a command, silencing stdout and stderr *unless* the command fails.
    ###
    ### **NOTE:** don't use `stfu` for handling sensitive data or commands!
    ### use it for 7zip.
    ###
    ### ```
    ### $ touch butts
    ### $ stfu 7z a butts.7z butts
    ### $ stfu 7z a butts.7z asses
    ### command failed with exit status 1:
    ### 7z a butts.7z asses
    ###
    ### $ tail -n 20 /tmp/stfu/out_1627834220
    ### Solid = -
    ### Blocks = 0
    ###
    ### Scanning the drive:
    ### 0 files, 0 bytes
    ###
    ### Updating archive: butts.7z
    ###
    ### Keep old data in archive: 1 file, 0 bytes
    ### Add new data to archive: 0 files, 0 bytes
    ###
    ###
    ### Files read from disk: 0
    ### Archive size: 82 bytes (1 KiB)
    ###
    ### Scan WARNINGS for files and folders:
    ###
    ### asses : The system cannot find the file specified.
    ### ----------------
    ### Scan WARNINGS: 1
    ###
    ### $ tail -n 20 /tmp/stfu/err_1627834220
    ###
    ### WARNING: The system cannot find the file specified.
    ### asses
    ### ```

    [ $# -gt 0 ] || { printf "%s\n" "$0: too few arguments" >&2; return 1; }
    local temp="${TMP:-/tmp}/stfu"

    local time="$(date -u '+%s')"
    [ $? -eq 0 ] || { printf "%s\n" "$0: failed to get current time" >&2; return 1; }

    mkdir -p "$temp" || { printf "%s\n" "$0: failed to create temp directory" >&2; return 1; }

    while [ -e "$temp/out_$time" -o -e "$temp/err_$time" ]; do time=$((time+1)); done
    local out="$temp/out_$time"
    local err="$temp/err_$time"

    #local out="$(mktemp -t -p "$temp" out_XXXXXX)"
    #[ $? -eq 0 ] || { printf "%s\n" "$0: failed to create temp file" >&2; return 1; }
    #local err="$(mktemp -t -p "$temp" err_XXXXXX)"
    #[ $? -eq 0 ] || { printf "%s\n" "$0: failed to create temp file" >&2; return 1; }

    local ret=0
    "$@" > "$out" 2> "$err" || ret=$?
    if [ $ret -ne 0 ]; then
        printf "command failed with exit status %s:\n" $ret >&2
        echo2 "$@"
        echo2
        note '$ tail -n 20' "$out"
        tail -n 20 "$out" >&2
        echo2
        note '$ tail -n 20' "$err"
        tail -n 20 "$err" >&2
    fi
    return $ret
}

[ "${SOURCING:-0}" -gt 0 ] || stfu "$@"