#!/usr/bin/env sh
# compat: +ash +bash +dash +zsh

__oshi() { ### @oshi
    ### upload files (or stdin) to [oshi.at.](https://oshi.at)
    ### this script exits with the number of failed uploads; up to 255 at once.
    ### directories are skipped. for now, file expiry is hard-coded at 2 weeks.
    ###
    ### ```
    ### $ echo test | oshi
    ### MANAGE: https://oshi.at/a/7809e5e8a8b5c28555b1e8cadc99b069d08a5d09
    ### DL: https://oshi.at/ReTn/Dxzy
    ###
    ### $ oshi ~/play/{hey,you,fake,empty}
    ### MANAGE: https://oshi.at/a/9b56e4c5843006d491fabe859ea5746a8f36760c
    ### DL: https://oshi.at/obFf/hey
    ### oshi: expires in 14 days: /home/notwa/play/hey
    ### MANAGE: https://oshi.at/a/f2dc46ae900ca7465a377d7a7942e722f87ff483
    ### DL: https://oshi.at/JLBc/you
    ### oshi: expires in 14 days: /home/notwa/play/you
    ### oshi: no such file: /home/notwa/play/fake
    ### oshi: skipping directory: /home/notwa/play/empty
    ### oshi: successfully uploaded 2/4 files
    ### oshi: failed to upload 2/4 files
    ### ```

    inform() { printf '\033[1moshi: %s\033[m\n' "$*"; } >&2
    mutter() { printf '\033[31moshi: %s\033[m\n' "$*"; } >&2
    lament() { printf '\033[1;33moshi: %s\033[m\n' "$*"; } >&2
    recede() { printf '\033[1;31moshi: %s\033[m\n' "$*"; } >&2

    hits=0 total=0

    if [ $# = 0 ]; then
        curl -f -F f=@- -F expire=20160 -F randomizefn=1 https://oshi.at && hits=1 || true
        total=1
    elif [ $# -gt 255 ]; then
        recede "too many arguments (max: 255)"
        return 255
    else
        total=$#
    fi

    for f; do
        if [ ! -e "$f" ]; then
            mutter "no such file: $f"
            continue
        elif [ -d "$f" ]; then
            mutter "skipping directory: $f"
            continue
        elif [ ! -s "$f" ]; then
            mutter "skipping empty file: $f"
            continue
        fi

        # i have no idea why, but mingw64 curl on msys2 is replacing each unicode codepoint with a question mark.
        # the irony is that it seems to be properly decoding the UTF-8 encoding and then replacing it all anyway.
        [ -d /C ] && g="$(LC_ALL= cygpath -ws "$f")" || g="$f"

        bytes="$(du -b -- "$f")" || bytes=0
        if [ "$bytes" -gt 5000000000 ] 2>&-; then
            mutter "file too large: $f"
            continue
        fi

        if curl -fg -F f=@"$g" -F expire=20160 -F filename="${f##*/}" https://oshi.at; then
            inform "expires in 14 days: $f"
            : $((hits+=1))
        else
            mutter "failed to upload file: $f"
        fi
    done

    if [ $hits -gt 0 ]; then
        [ $hits = 1 ] && s= || s=s
        inform "successfully uploaded $hits/$total file$s"
    fi

    fails=$((total-hits))
    if [ $fails -gt 0 ]; then
        [ $fails = 1 ] && s= || s=s
        recede "failed to upload $fails/$total file$s"
    fi

    return $fails
}

oshi()(__oshi "$@")
[ -n "${preload+-}" ] || __oshi "$@"