#!/usr/bin/env bash
# =============================================================================
# LOCAL ACT RUNNER (Bash)
# =============================================================================
# Thin wrapper around nektos/act for local CI execution.
# For full-featured local CI (smoke, pr, module modes) use:
#   ./devops/scripts/local-ci.sh
#
# Usage:
#   ./devops/ci-local/run-act.sh [options]
#
# Options:
#   -w, --workflow <name>   Workflow file (with or without .yml)
#   -j, --job <name>        Run only a specific job
#   -l, --list              List available jobs
#   -n, --dry-run           Dry-run mode
#   -e, --event <type>      Event type: pull_request (default) or push
#   -r, --rebuild           Force rebuild CI image
#   -v, --verbose           Verbose output
#   -h, --help              Show this help
# =============================================================================

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"

CI_IMAGE="stellaops-ci:local"
CI_DOCKERFILE="$REPO_ROOT/devops/docker/Dockerfile.ci"

# Defaults
WORKFLOW=""
JOB=""
LIST=false
DRY_RUN=false
EVENT="pull_request"
REBUILD=false
VERBOSE=false

usage() {
    head -25 "$0" | grep '^#' | sed 's/^# \?//'
    exit 0
}

# ---- Parse args ----
while [[ $# -gt 0 ]]; do
    case "$1" in
        -w|--workflow) WORKFLOW="$2"; shift 2 ;;
        -j|--job)     JOB="$2"; shift 2 ;;
        -l|--list)    LIST=true; shift ;;
        -n|--dry-run) DRY_RUN=true; shift ;;
        -e|--event)   EVENT="$2"; shift 2 ;;
        -r|--rebuild) REBUILD=true; shift ;;
        -v|--verbose) VERBOSE=true; shift ;;
        -h|--help)    usage ;;
        *) echo "Unknown option: $1"; usage ;;
    esac
done

# ---- Prerequisite checks ----

if ! docker info &>/dev/null; then
    echo "ERROR: Docker is not running." >&2
    exit 1
fi

if ! command -v act &>/dev/null; then
    echo "ERROR: act is not installed." >&2
    echo "  macOS:   brew install act" >&2
    echo "  Linux:   curl -sSL https://raw.githubusercontent.com/nektos/act/master/install.sh | sudo bash" >&2
    echo "  Windows: choco install act-cli" >&2
    exit 1
fi

# ---- Build CI image if needed ----

image_exists() {
    docker image inspect "$CI_IMAGE" &>/dev/null
}

if [[ "$REBUILD" == "true" ]] || ! image_exists; then
    echo "[ci-local] Building CI image $CI_IMAGE ..."
    docker build -t "$CI_IMAGE" -f "$CI_DOCKERFILE" "$REPO_ROOT"
fi

# ---- Ensure .env.local ----

ENV_LOCAL="$SCRIPT_DIR/.env.local"
if [[ ! -f "$ENV_LOCAL" ]]; then
    echo "[ci-local] Creating .env.local from template ..."
    cp "$SCRIPT_DIR/.env.local.template" "$ENV_LOCAL"
fi

# ---- Assemble act arguments ----

act_args=()

if [[ "$LIST" == "true" ]]; then
    cd "$REPO_ROOT"
    exec act -l
fi

if [[ -n "$WORKFLOW" ]]; then
    wf_file="$WORKFLOW"
    [[ "$wf_file" != *.yml ]] && wf_file="${wf_file}.yml"
    wf_path="$REPO_ROOT/.gitea/workflows/$wf_file"
    if [[ ! -f "$wf_path" ]]; then
        echo "ERROR: Workflow not found: $wf_path" >&2
        exit 1
    fi
    act_args+=(-W "$wf_path")
fi

if [[ -n "$JOB" ]]; then
    act_args+=(-j "$JOB")
fi

# Event file
case "$EVENT" in
    pull_request) event_file="$SCRIPT_DIR/events/pull-request.json" ;;
    push)         event_file="$SCRIPT_DIR/events/push.json" ;;
    *)            echo "ERROR: Unknown event type: $EVENT" >&2; exit 1 ;;
esac
if [[ -f "$event_file" ]]; then
    act_args+=(--eventpath "$event_file")
fi

if [[ "$DRY_RUN" == "true" ]]; then
    act_args+=(-n)
fi

if [[ "$VERBOSE" == "true" ]]; then
    act_args+=(--verbose)
fi

# ---- Run ----

echo "[ci-local] act ${act_args[*]}"
cd "$REPO_ROOT"
exec act "${act_args[@]}"