#!/usr/bin/env bash
# Verify Findings Ledger installation
# Usage: ./verify-install.sh [service-url]

set -euo pipefail

SERVICE_URL="${1:-http://localhost:8188}"

# Color output helpers
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

log_info() { echo -e "${GREEN}[INFO]${NC} $*"; }
log_warn() { echo -e "${YELLOW}[WARN]${NC} $*"; }
log_error() { echo -e "${RED}[ERROR]${NC} $*"; }
log_pass() { echo -e "${GREEN}  ✓${NC} $*"; }
log_fail() { echo -e "${RED}  ✗${NC} $*"; }

CHECKS_PASSED=0
CHECKS_FAILED=0

run_check() {
    local name="$1"
    local cmd="$2"

    if eval "$cmd" &>/dev/null; then
        log_pass "$name"
        ((CHECKS_PASSED++))
    else
        log_fail "$name"
        ((CHECKS_FAILED++))
    fi
}

main() {
    log_info "Findings Ledger - Installation Verification"
    log_info "==========================================="
    log_info "Service URL: $SERVICE_URL"
    echo ""

    log_info "Health Checks:"
    run_check "Readiness endpoint" "curl -sf ${SERVICE_URL}/health/ready"
    run_check "Liveness endpoint" "curl -sf ${SERVICE_URL}/health/live"

    echo ""
    log_info "Metrics Checks:"
    run_check "Metrics endpoint available" "curl -sf ${SERVICE_URL}/metrics | head -1"
    run_check "ledger_write_latency_seconds present" "curl -sf ${SERVICE_URL}/metrics | grep -q ledger_write_latency_seconds"
    run_check "ledger_projection_lag_seconds present" "curl -sf ${SERVICE_URL}/metrics | grep -q ledger_projection_lag_seconds"
    run_check "ledger_merkle_anchor_duration_seconds present" "curl -sf ${SERVICE_URL}/metrics | grep -q ledger_merkle_anchor_duration_seconds"

    echo ""
    log_info "API Checks:"
    run_check "OpenAPI spec available" "curl -sf ${SERVICE_URL}/swagger/v1/swagger.json | head -1"

    echo ""
    log_info "========================================"
    log_info "Results: ${CHECKS_PASSED} passed, ${CHECKS_FAILED} failed"

    if [[ $CHECKS_FAILED -gt 0 ]]; then
        log_error "Some checks failed. Review service logs for details."
        exit 1
    fi

    log_info "All checks passed. Installation verified."
}

main "$@"