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#!/bin/bash
# hypo-cli -- Easily communicate with hypo
# Copyright (C) 2013  Tom Willemse
#
# This file is part of hypo-cli
#
# hypo-cli is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# hypo-cli is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with hypo-cli. If not, see <http://www.gnu.org/licenses/>.

URL="https://ryuslash.org/hypo"

function help_send
{
    echo "Usage: $xname send FILE"
    echo "       $xname send [SUFFIX]"
    echo
    echo "Using the first form FILE will be uploaded to a hypo instance and the URL at "
    echo "which it can be visited will be printed."
    echo
    echo "Using the second form requires that input come from a pipe. Such as:"
    echo
    echo "    cat somefile.txt | hypo send"
    echo
    echo "In this case the argument to send is optional, if it is specified it should "
    echo "include a \`.' to help pygments decide on the syntax highlighting to use. If the "
    echo "argument is left unspecified it defaults to \`.txt'."
}

function cmd_send
{
    if [[ ! -t 0 ]]; then
        sendfile="$(mktemp --suffix ${1-.txt})"
        cat - > "$sendfile"
    elif [[ -z "$1" ]]; then
        cmd_help "send"
        exit 1
    else
        sendfile="$1"
    fi

    curl --upload-file "$sendfile" "$URL/"

    if [[ -t 0 ]]; then
        rm "$sendfile"
    fi
}

function help_scrot
{
    echo "Usage: $xname scrot ARG"
    echo
    echo "The ARG will be passed directly to scrot. The resulting screenshot will be sent"
    echo "directly to hypo and removed locally."
}

function cmd_scrot
{
    scrot $1 -e "curl --upload-file \$f $URL/ && rm \$f"
}

function help_rm
{
    echo "Usage: $xname rm HASH"
    echo
    echo "Remove a file from hypo. The HASH under which it is stored remotely (the last"
    echo "part of the URL) should be specified."
}

function cmd_rm
{
    if [[ -z "$1" ]]; then
        cmd_help "rm"
        exit 1
    fi
    curl -XDELETE "$URL/$1"
}

function help_help { cmd_help "$@"; }
function cmd_help
{
    local xname="$(basename $0)"

    if [[ -n "$1" ]]; then
        local prefix="help"
        dispatch "$@"
    else
        echo "Usage: $xname <command> [OPT ...] [ARG ...]"
        echo
        echo "Commands include: "
        echo "  help    Show this help message"
        echo "  rm      Remove a file from a hypo instance"
        echo "  scrot   Take a screenshot and send it to a hypo instance"
        echo "  send    Send a file to a hypo instance"
        echo
        echo "You can use \`$xname help <command>' to get more information about a command."
    fi
}

function dispatch
{
    local name="${prefix-cmd}_$1"

    if [[ $(type -t "$name") == "function" ]]; then
        shift
        "$name" "$@"
    else
        echo "Unknown command: $1"
        exit 1
    fi
}

if [[ ${#@} -lt 1 ]]; then
    cmd_help "$@"
    exit 1
else
    dispatch "$@"
fi