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

DOCKER_BUILD_TIMEOUT=600
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BOLD='\033[1m'
NC='\033[0m'

PING_URL="${1:-}"
REPO_DIR="${2:-.}"

if [ -z "$PING_URL" ]; then
  printf "Usage: %s <ping_url> [repo_dir]\n" "$0"
  exit 1
fi

REPO_DIR="$(cd "$REPO_DIR" 2>/dev/null && pwd)"
PING_URL="${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} ($PING_URL/reset) ..."
HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" -X POST \
  -H "Content-Type: application/json" -d '{}' \
  "$PING_URL/reset" --max-time 30 2>/dev/null || 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 (connection failed or timed out)"
  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 command 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 $DOCKER_CONTEXT"
BUILD_OK=false
BUILD_OUTPUT=$(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 command not found"
  hint "Install it: pip install openenv-core"
  stop_at "Step 3"
fi

VALIDATE_OK=false
VALIDATE_OUTPUT=$(cd "$REPO_DIR" && openenv validate 2>&1) && VALIDATE_OK=true

if [ "$VALIDATE_OK" = true ]; then
  pass "openenv validate passed"
  [ -n "$VALIDATE_OUTPUT" ] && log "  $VALIDATE_OUTPUT"
else
  fail "openenv validate failed"
  printf "%s\n" "$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