#!/usr/bin/env bash
#  vim:ts=4:sts=4:sw=4:et
#  args: echo user={user} name={name} repo={project}
#
#  Author: Hari Sekhon
#  Date: 2020-08-30 10:08:07 +0100 (Sun, 30 Aug 2020)
#
#  https://github.com/harisekhon/bash-tools
#
#  License: see accompanying Hari Sekhon LICENSE file
#
#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help improve or steer this or other code I publish
#
#  https://www.linkedin.com/in/harisekhon
#

set -euo pipefail
[ -n "${DEBUG:-}" ] && set -x
srcdir="$(cd "$(dirname "$0")" && pwd)"

# shellcheck disable=SC1090
. "$srcdir/lib/utils.sh"

# shellcheck disable=SC2034,SC2154
usage_description="
Run a command for each GitLab project / repo

All arguments become the command template

The command template replaces the following for convenience in each iteration:

{username}, {user}    =>    your authenticated user
{name}                =>    the repo / project name without the user prefix
{project}, {repo}     =>    the repo / project name with the user prefix

eg.
    ${0##*/} echo user={user} name={name} repo={project}
    ${0##*/} echo user={user} name={name} repo={repo}
"

# used by usage() in lib/utils.sh
# shellcheck disable=SC2034
usage_args="<command> <args>"

help_usage "$@"

min_args 1 "$@"

cmd_template="$*"

if [ -n "${GITLAB_USER:-}" ]; then
    user="$GITLAB_USER"
else
    # get currently authenticated user
    user="$(gitlab_api.sh /user | jq -r .username)"
fi

get_repos(){
    local page=1
    while true; do
        if ! output="$("$srcdir/gitlab_api.sh" "/users/$user/projects?page=$page&per_page=100")"; then
            echo "ERROR" >&2
            exit 1
        fi
        if [ -z "$(jq '.[]' <<< "$output")" ]; then
            break
        elif jq -r '.message' <<< "$output" >&2 2>/dev/null; then
            exit 1
        fi
        jq -r '.[] | select(.fork | not) | [.path, .path_with_namespace] | @tsv' <<< "$output"
        ((page+=1))
    done
}

while read -r name repo; do
    echo "# ============================================================================ #" >&2
    echo "# $repo" >&2
    echo "# ============================================================================ #" >&2
    cmd="$cmd_template"
    cmd="${cmd//\{username\}/$user}"
    cmd="${cmd//\{user\}/$user}"
    cmd="${cmd//\{project\}/$repo}"
    cmd="${cmd//\{repo\}/$repo}"
    cmd="${cmd//\{name\}/$name}"
    eval "$cmd"
done < <(get_repos)