review.sh

#! /bin/bash

set -e

# --- Globals ---
declare default_remote=newscred
declare remote
declare branch

# --- Function definitions ---
help() {
    local -r script_name=$(basename "${BASH_SOURCE[0]}")
    
    log "Usage: $script_name [remote_name]:[branch_name]"
}

review() {
    remote=$(echo "$1" | awk -F: '{print $1}')
    branch=$(echo "$1" | awk -F: '{print $2}')

    ensure_remote_exists

    log "Fetching branch '$branch' from remote '$remote'"
    git fetch "$remote" "$branch"

    log "Switching to branch '$remote/$branch'"
    git checkout "$remote"/"$branch"
}

ensure_remote_exists() {
    local remote_url
    local existing_remote

    remote_url=$(git remote get-url $default_remote | sed "s/:.*\//:$remote\//")

    existing_remote=$(git remote -v | grep "$remote_url" | head -1 | awk '{ print $1 }')

    if [ -z "$existing_remote" ]; then
        log "Adding new remote '$remote'"
        git remote add "$remote" "$remote_url"
    else
        log "Using existing remote '$existing_remote'"
        remote=$existing_remote
    fi
}

log() {
  echo >&2 -e "${1-}"
}

main() {
    case $1 in
        "") 
            help
            exit 1
            ;;
        *)
            review "$1"
            ;;
    esac   
}

# --- Start of execution ---
main "$@"