# Shell helpers for estampa. Source this from your shell rc:
#
#     export ESTAMPA_HOST=estampa@paste.example.com
#     . /path/to/extras/estampa.sh
#
# Optional:
#     export ESTAMPA_URL=https://paste.example.com
# Defaults to "https://" + the host part of $ESTAMPA_HOST.
#
# Functions:
#     estampaup ./file.txt        upload a file, print the URL.
#     estampaste file.txt         upload the clipboard as <file.txt>, print the URL.
#
# estampaste uses wl-paste on Wayland and pbpaste on macOS.

estampaup() {
    if [ $# -ne 1 ]; then
        printf 'usage: estampaup <file>\n' >&2
        return 2
    fi
    if [ ! -f "$1" ]; then
        printf 'estampaup: not a file: %s\n' "$1" >&2
        return 1
    fi

    local host="${ESTAMPA_HOST:?set ESTAMPA_HOST=estampa@paste.example.com}"
    local url="${ESTAMPA_URL:-https://${host#*@}}"
    local name
    name=$(basename -- "$1")

    scp -q "$1" "$host:./$name" || return $?
    printf '%s/%s\n' "$url" "$name"
}

estampaste() {
    if [ $# -ne 1 ]; then
        printf 'usage: estampaste <filename>\n' >&2
        return 2
    fi

    local host="${ESTAMPA_HOST:?set ESTAMPA_HOST=estampa@paste.example.com}"
    local url="${ESTAMPA_URL:-https://${host#*@}}"
    local name="$1"

    local clip
    if command -v wl-paste >/dev/null 2>&1; then
        clip=wl-paste
    elif command -v pbpaste >/dev/null 2>&1; then
        clip=pbpaste
    else
        printf 'estampaste: no clipboard tool (need wl-paste or pbpaste)\n' >&2
        return 1
    fi

    local tmp
    tmp=$(mktemp) || return 1
    # >| overrides zsh/bash `noclobber`; mktemp just created the file
    # and we intentionally want to write over it.
    if ! $clip >|"$tmp"; then
        rm -f "$tmp"
        return 1
    fi
    if [ ! -s "$tmp" ]; then
        printf 'estampaste: clipboard is empty\n' >&2
        rm -f "$tmp"
        return 1
    fi
    # mktemp creates 600; scp preserves source mode, so without this
    # the upload lands unreadable to the nginx user.
    chmod 644 "$tmp"

    if ! scp -q "$tmp" "$host:./$name"; then
        rm -f "$tmp"
        return 1
    fi
    rm -f "$tmp"
    printf '%s/%s\n' "$url" "$name"
}