#!/bin/bash
# Integration Test 01: Cross-Lab Functionality
# Verifica che tutti i lab lavorino insieme correttamente

set -euo pipefail

# Colori
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m'

pass_count=0
fail_count=0
skip_count=0

inc_pass() { ((pass_count++)) || true; }
inc_fail() { ((fail_count++)) || true; }
inc_skip() { ((skip_count++)) || true; }

echo "=========================================="
echo "Integration Test 01: Cross-Lab Functionality"
echo "=========================================="
echo ""

# Verifica che tutti i lab esistano
echo "[TEST] Verifica esistenza lab directories..."
labs=("lab-01-iam" "lab-02-network" "lab-03-compute" "lab-04-storage" "lab-05-database")
for lab in "${labs[@]}"; do
    if [ -d "labs/$lab" ]; then
        echo -e "  ${GREEN}✓${NC} $lab"
        inc_pass
    else
        echo -e "  ${RED}✗${NC} $lab NON TROVATO"
        inc_fail
    fi
done
echo ""

# Verifica docker-compose.yml per ogni lab
echo "[TEST] Verifica docker-compose.yml per ogni lab..."
for lab in "${labs[@]}"; do
    compose_file="labs/$lab/docker-compose.yml"
    if [ -f "$compose_file" ]; then
        echo -e "  ${GREEN}✓${NC} $lab/docker-compose.yml"
        inc_pass
    else
        echo -e "  ${YELLOW}⊘${NC} $lab/docker-compose.yml (opzionale)"
        inc_skip
    fi
done
echo ""

# Verifica che i test esistano per ogni lab
echo "[TEST] Verifica test scripts per ogni lab..."
for lab in "${labs[@]}"; do
    test_dir="labs/$lab/tests"
    if [ -d "$test_dir" ]; then
        test_count=$(ls "$test_dir"/*.sh 2>/dev/null | wc -l)
        if [ $test_count -gt 0 ]; then
            echo -e "  ${GREEN}✓${NC} $lab/tests ($test_count scripts)"
            inc_pass
        else
            echo -e "  ${YELLOW}⊘${NC} $lab/tests (vuoto)"
            inc_skip
        fi
    else
        echo -e "  ${RED}✗${NC} $lab/tests NON TROVATO"
        inc_fail
    fi
done
echo ""

# Verifica documentazione per ogni lab
echo "[TEST] Verifica documentazione Diátaxis per ogni lab..."
for lab in "${labs[@]}"; do
    doc_types=("tutorial" "how-to-guides" "reference" "explanation")
    all_docs=true
    for doc_type in "${doc_types[@]}"; do
        if [ ! -d "labs/$lab/$doc_type" ]; then
            all_docs=false
            break
        fi
    done

    if $all_docs; then
        echo -e "  ${GREEN}✓${NC} $lab (Diátaxis completo)"
        inc_pass
    else
        echo -e "  ${YELLOW}⊘${NC} $lab (documentazione parziale)"
        inc_skip
    fi
done
echo ""

# Test deploy multi-tier (usando Lab 05 come reference)
echo "[TEST] Verifica architettura multi-tier..."
if [ -f "labs/lab-05-database/docker-compose.yml" ]; then
    cd labs/lab-05-database

    # Verifica servizi multi-tier
    if grep -q "app:" docker-compose.yml && grep -q "db:" docker-compose.yml; then
        echo -e "  ${GREEN}✓${NC} Architettura multi-tier configurata (app → db)"
        inc_pass

        # Verifica app può connettersi al database
        if docker ps --format '{{{{Names}}}}' | grep -q "lab05-app" && \
           docker ps --format '{{{{Names}}}}' | grep -q "lab05-db"; then

            echo -n "  [TEST] Verifica connessione app → database... "
            if docker exec lab05-app psql -h db -U lab05_user -d lab05_db -c "SELECT 1;" &>/dev/null; then
                echo -e "${GREEN}PASS${NC}"
                inc_pass
            else
                echo -e "${YELLOW}SKIP${NC} (database non pronto)"
                inc_skip
            fi
        else
            echo -e "  ${YELLOW}⊘${NC} Container non in esecuzione"
            inc_skip
        fi
    else
        echo -e "  ${RED}✗${NC} Architettura multi-tier NON configurata"
        inc_fail
    fi

    cd - > /dev/null
else
    echo -e "  ${YELLOW}⊘${NC} Lab 05 non trovato"
    inc_skip
fi
echo ""

# Verifica integrità volumi (Lab 04 e 05)
echo "[TEST] Verifica integrità volumi (Lab 04 + 05)..."
volume_count=$(docker volume ls --format '{{{{.Name}}}}' | grep -E "lab04|minio|lab05|db-data" | wc -l)
if [ $volume_count -gt 0 ]; then
    echo -e "  ${GREEN}✓${NC} Trovati $volume_count volumi persistenti"
    inc_pass
else
    echo -e "  ${YELLOW}⊘${NC} Nessun volume trovato (lab non avviati)"
    inc_skip
fi
echo ""

# Verifica reti isolate (Lab 02 e 05)
echo "[TEST] Verifica reti private isolate..."
private_networks=$(docker network ls --format '{{{{.Name}}}}' | grep -E "private|vpc-private" | wc -l)
if [ $private_networks -gt 0 ]; then
    echo -e "  ${GREEN}✓${NC} Trovate $private_networks reti private"
    inc_pass
else
    echo -e "  ${YELLOW}⊘${NC} Nessuna rete privata trovata"
    inc_skip
fi
echo ""

echo "=========================================="
echo "Risultato: $pass_count PASS, $fail_count FAIL, $skip_count SKIP"
echo "=========================================="

if [ $fail_count -gt 0 ]; then
    exit 1
fi

exit 0