#!/usr/bin/env bash
set -euo pipefail

show_help() {
  cat <<'EOF'
sf-dry-run — wrapper for `sf project deploy start --dry-run`

USAGE:
  sf-dry-run -o <ORG_ALIAS_OR_USERNAME> -s "<src1>,<src2>[,...]" [-t "<Test1>,<Test2>[,...]"]

OPTIONS:
  -o  Org alias or username for --target-org
  -s  Comma-separated list of --source-dir paths
  -t  Comma-separated list of --tests (enables --test-level RunSpecifiedTests)
  -h  Show this help

EXAMPLES:
  1) Basic dry-run with multiple flexipages:
     sf-dry-run -o DEMO-ORG \
       -s "force-app/main/default/flexipages/Sample_Page.flexipage-meta.xml,force-app/main/default/flexipages/Sample_SalesNavigator.flexipage-meta.xml,force-app/main/default/flexipages/Sample_Role_Record_Page.flexipage-meta.xml"

  2) Dry-run with specified tests:
     sf-dry-run -o DEMO-ORG \
       -s "force-app/main/default/flexipages/Demo_Page.flexipage-meta.xml,force-app/main/default/flexipages/Demo_Page_Backup_With_SalesNavigator.flexipage-meta.xml" \
       -t "SelectorOpportunity_Test,SelectorOpportunity2_Test"

Notes:
- Pass absolute or repo-relative paths in -s, separated by commas.
- Multiple tests are comma-separated in -t; they will be expanded to multiple --tests flags.
EOF
}

ORG=""
declare -a SOURCES_ARR=()
declare -a TESTS_ARR=()

if [[ $# -eq 0 ]]; then
  show_help
  exit 0
fi

while getopts ":o:s:t:h" opt; do
  case "$opt" in
    o) ORG="$OPTARG" ;;
    s) IFS=',' read -r -a SOURCES_ARR <<< "$OPTARG" ;;
    t) IFS=',' read -r -a TESTS_ARR <<< "$OPTARG" ;;
    h) show_help; exit 0 ;;
    \?) echo "Unknown option: -$OPTARG" >&2; echo; show_help; exit 1 ;;
    :)  echo "Option -$OPTARG requires an argument." >&2; echo; show_help; exit 1 ;;
  esac
done

CMD=(sf project deploy start --dry-run)

# sources
for SRC in "${SOURCES_ARR[@]:-}"; do
  [[ -n "$SRC" ]] && CMD+=(--source-dir "$SRC")
done

# org
[[ -n "$ORG" ]] && CMD+=(--target-org "$ORG")

# tests
if [[ ${#TESTS_ARR[@]:-0} -gt 0 ]]; then
  CMD+=(--test-level RunSpecifiedTests)
  for T in "${TESTS_ARR[@]}"; do
    [[ -n "$T" ]] && CMD+=(--tests "$T")
  done
fi

echo ">>> Running: ${CMD[*]}"
exec "${CMD[@]}"