remote

#!/bin/sh
#/ remote: Opens remote git repository in your broswer
#/
#/ Description:
#/   If no file is specified, then the repository's main page is opened. Note that if
#/   '-s|--start-line' or '-e|--end-line' are supplied, then only one file can be supllied.
#/
#/ Usage:
#/   remote [-h|--help] [-b|--branch branch_name] [-s|--start-line line_num] [-e|--end-line line_num] [file...]
set -e

open=$(command -v open || command -v xdg-open)
branch="$(git branch --show-current)"
start_line=
end_line=
for i in "$@"; do
    case $i in
        -h|--help)
            grep ^\#\/ < "$0" | cut -c4-
            exit 1
            ;;
        -b|--branch)
            branch="$2"
            shift; shift
            ;;
        -s|--start-line)
            start_line="$2"
            shift; shift
            ;;
        -e|--end-line)
            end_line="$2"
            shift; shift
            ;;
    esac
done

[ -n "$end_line" ] && [ -z "$start_line" ] && {
    echo "Endline specified without a startline!"
    exit 1
}

git ls-remote --heads --exit-code origin "$branch" >/dev/null || {
    default_branch=$(git symbolic-ref refs/remotes/origin/HEAD | sed 's@^refs/remotes/origin/@@')
    echo "WARN: Branch '$branch' was not found on the origin repo, defaulting to $default_branch"
    branch=$default_branch
}

remote=$(git remote -v | grep fetch | awk '{ print $2 }')
case $remote in
    https://*)
        ;;
    git@*)
        remote=$(echo "$remote" |\
            awk 'BEGIN { FS = "[@:.]" } ; { print "https://"$2"."$3"/"$4 }')
        ;;
    *)
        echo "Unknown remote format" >&2
        exit 1
        ;;
esac

[ "$#" -lt 1 ] && {
    $open "$remote/tree/$branch"
    exit
}

break_early=false
[ -n "$start_line" ] && [ "$#" -gt 1 ] && {
    echo "WARN: Multiple files specified when using '-s|--start-line' flag; defaulting to only opening the first file."
    break_early=true
}

for file in "$@"; do
    repository_root=$(basename $(git rev-parse --show-toplevel))
    path=$(pwd | sed "s/.*\/$repository_root\/\{0,1\}\(.*\)/\1/")
    line_range=""
    [ -n "$start_line" ] && line_range="$line_range#L$start_line"
    [ -n "$end_line" ] && line_range="$line_range-L$end_line"
    $open "$remote/blob/$branch/$path/$file$line_range"
    $break_early && exit
done