#!/usr/bin/env bash
#
# validate-submission.sh — OpenEnv Submission Validator
#
set -uo pipefail

DOCKER_BUILD_TIMEOUT=600
if [ -t 1 ]; then
  RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'; BOLD='\033[1m'; NC='\033[0m'
else
  RED=''; GREEN=''; YELLOW=''; BOLD=''; NC=''
fi

run_with_timeout() {
  local secs="$1"; shift
  if command -v timeout &>/dev/null; then timeout "$secs" "$@"
  elif command -v gtimeout &>/dev/null; then gtimeout "$secs" "$@"
  else
    "$@" & local pid=$!
    ( sleep "$secs" && kill "$pid" 2>/dev/null ) & local watcher=$!
    wait "$pid" 2>/dev/null; local rc=$?
    kill "$watcher" 2>/dev/null; wait "$watcher" 2>/dev/null; return $rc
  fi
}

portable_mktemp() { local prefix="${1:-validate}"; mktemp "${TMPDIR:-/tmp}/${prefix}-XXXXXX" 2>/dev/null || mktemp; }

CLEANUP_FILES=()
cleanup() { rm -f "${CLEANUP_FILES[@]+"${CLEANUP_FILES[@]}"}"; }
trap cleanup EXIT

PING_URL="${1:-}"; REPO_DIR="${2:-.}"
if [ -z "$PING_URL" ]; then
  printf "Usage: %s <ping_url> [repo_dir]\n" "$0"; exit 1
fi
if ! REPO_DIR="$(cd "$REPO_DIR" 2>/dev/null && pwd)"; then
  printf "Error: directory '%s' not found\n" "${2:-.}"; exit 1
fi
PING_URL="${PING_URL%/}"; export PING_URL; PASS=0

log()  { printf "[%s] %b\n" "$(date -u +%H:%M:%S)" "$*"; }
pass() { log "${GREEN}PASSED${NC} -- $1"; PASS=$((PASS + 1)); }
fail() { log "${RED}FAILED${NC} -- $1"; }
hint() { printf "  ${YELLOW}Hint:${NC} %b\n" "$1"; }
stop_at() {
  printf "\n${RED}${BOLD}Validation stopped at %s.${NC} Fix the above before continuing.\n" "$1"; exit 1
}

printf "\n${BOLD}========================================${NC}\n"
printf "${BOLD}  OpenEnv Submission Validator${NC}\n"
printf "${BOLD}========================================${NC}\n"
log "Repo:     $REPO_DIR"; log "Ping URL: $PING_URL"; printf "\n"

log "${BOLD}Step 1/3: Pinging HF Space${NC} ($PING_URL/reset) ..."
CURL_OUTPUT=$(portable_mktemp "validate-curl"); CLEANUP_FILES+=("$CURL_OUTPUT")
HTTP_CODE=$(curl -s -o "$CURL_OUTPUT" -w "%{http_code}" -X POST \
  -H "Content-Type: application/json" -d '{}' "$PING_URL/reset" --max-time 30 2>"$CURL_OUTPUT" || printf "000")
if [ "$HTTP_CODE" = "200" ]; then pass "HF Space is live and responds to /reset"
elif [ "$HTTP_CODE" = "000" ]; then
  fail "HF Space not reachable"; hint "Check your network and that the Space is running."; stop_at "Step 1"
else
  fail "HF Space /reset returned HTTP $HTTP_CODE (expected 200)"; stop_at "Step 1"
fi

log "${BOLD}Step 2/3: Running docker build${NC} ..."
if ! command -v docker &>/dev/null; then fail "docker not found"; stop_at "Step 2"; fi
if [ -f "$REPO_DIR/Dockerfile" ]; then DOCKER_CONTEXT="$REPO_DIR"
elif [ -f "$REPO_DIR/server/Dockerfile" ]; then DOCKER_CONTEXT="$REPO_DIR/server"
else fail "No Dockerfile found"; stop_at "Step 2"; fi
log "  Found Dockerfile in $DOCKER_CONTEXT"
BUILD_OK=false
BUILD_OUTPUT=$(run_with_timeout "$DOCKER_BUILD_TIMEOUT" docker build "$DOCKER_CONTEXT" 2>&1) && BUILD_OK=true
if [ "$BUILD_OK" = true ]; then pass "Docker build succeeded"
else fail "Docker build failed"; printf "%s\n" "$BUILD_OUTPUT" | tail -20; stop_at "Step 2"; fi

log "${BOLD}Step 3/3: Running openenv validate${NC} ..."
if ! command -v openenv &>/dev/null; then fail "openenv not found"; stop_at "Step 3"; fi
VALIDATE_OK=false
VALIDATE_OUTPUT=$(cd "$REPO_DIR" && openenv validate 2>&1) && VALIDATE_OK=true
if [ "$VALIDATE_OK" = true ]; then pass "openenv validate passed"
else fail "openenv validate failed"; printf "%s\n" "$VALIDATE_OUTPUT"; stop_at "Step 3"; fi

printf "\n${BOLD}========================================${NC}\n"
printf "${GREEN}${BOLD}  All 3/3 checks passed!${NC}\n"
printf "${BOLD}========================================${NC}\n\n"
exit 0