#!/bin/bash

# Script de déploiement unifié pour GEOSECTOR Flutter App
# Version: 4.0 (Janvier 2025)
# Auteur: Pierre (avec l'aide de Claude)
#
# Usage:
#   ./deploy-app.sh          # Déploiement local DEV (build → container geo)
#   ./deploy-app.sh rca      # Livraison RECETTE (container geo → rca-geo)
#   ./deploy-app.sh pra      # Livraison PRODUCTION (rca-geo → pra-geo)

set -euo pipefail

cd /home/pierre/dev/geosector/app

# =====================================
# Configuration générale
# =====================================

# Paramètre optionnel pour l'environnement cible
TARGET_ENV=${1:-dev}

# Configuration SSH
HOST_KEY="/home/pierre/.ssh/id_rsa_mbpi"
HOST_PORT="22"
HOST_USER="root"

# Configuration des serveurs
RCA_HOST="195.154.80.116"  # Serveur de recette
PRA_HOST="51.159.7.190"     # Serveur de production

# Configuration Incus
INCUS_PROJECT="default"
APP_PATH="/var/www/geosector/app"
FINAL_OWNER="nginx"
FINAL_GROUP="nginx"

# Configuration de sauvegarde
BACKUP_DIR="/data/backup/geosector"

# Couleurs pour les messages
GREEN='\033[0;32m'
RED='\033[0;31m'
YELLOW='\033[0;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# =====================================
# Fonctions utilitaires
# =====================================

echo_step() {
    echo -e "${GREEN}==>${NC} $1"
}

echo_info() {
    echo -e "${BLUE}Info:${NC} $1"
}

echo_warning() {
    echo -e "${YELLOW}Warning:${NC} $1"
}

echo_error() {
    echo -e "${RED}Error:${NC} $1"
    exit 1
}

# Fonction pour créer une sauvegarde locale
create_local_backup() {
    local archive_file=$1
    local backup_type=$2
    
    echo_info "Creating backup in ${BACKUP_DIR}..."
    
    if [ ! -d "${BACKUP_DIR}" ]; then
        mkdir -p "${BACKUP_DIR}" || echo_warning "Could not create backup directory ${BACKUP_DIR}"
    fi
    
    if [ -d "${BACKUP_DIR}" ]; then
        BACKUP_FILE="${BACKUP_DIR}/app-${backup_type}-$(date +%Y%m%d-%H%M%S).tar.gz"
        cp "${archive_file}" "${BACKUP_FILE}" && {
            echo_info "Backup saved to: ${BACKUP_FILE}"
            echo_info "Backup size: $(du -h "${BACKUP_FILE}" | cut -f1)"
            
            # Nettoyer les anciens backups (garder les 10 derniers)
            echo_info "Cleaning old backups (keeping last 10)..."
            ls -t "${BACKUP_DIR}"/app-${backup_type}-*.tar.gz 2>/dev/null | tail -n +11 | xargs -r rm -f && {
                REMAINING_BACKUPS=$(ls "${BACKUP_DIR}"/app-${backup_type}-*.tar.gz 2>/dev/null | wc -l)
                echo_info "Kept ${REMAINING_BACKUPS} backup(s)"
            }
        } || echo_warning "Failed to create backup in ${BACKUP_DIR}"
    fi
}

# =====================================
# Détermination de la configuration selon l'environnement
# =====================================

case $TARGET_ENV in
    "dev")
        echo_step "Configuring for LOCAL DEV deployment"
        SOURCE_TYPE="local_build"
        DEST_CONTAINER="geo"
        DEST_HOST="local"
        ENV_NAME="DEVELOPMENT"
        ;;
    "rca")
        echo_step "Configuring for RECETTE delivery"
        SOURCE_TYPE="local_container"
        SOURCE_CONTAINER="geo"
        DEST_CONTAINER="rca-geo"
        DEST_HOST="${RCA_HOST}"
        ENV_NAME="RECETTE"
        ;;
    "pra")
        echo_step "Configuring for PRODUCTION delivery"
        SOURCE_TYPE="remote_container"
        SOURCE_HOST="${RCA_HOST}"
        SOURCE_CONTAINER="rca-geo"
        DEST_CONTAINER="pra-geo"
        DEST_HOST="${PRA_HOST}"
        ENV_NAME="PRODUCTION"
        ;;
    *)
        echo_error "Unknown environment: $TARGET_ENV. Use 'dev', 'rca' or 'pra'"
        ;;
esac

echo_info "Deployment flow: ${ENV_NAME}"

# =====================================
# Création de l'archive selon la source
# =====================================

TIMESTAMP=$(date +%s)
ARCHIVE_NAME="app-deploy-${TIMESTAMP}.tar.gz"
TEMP_ARCHIVE="/tmp/${ARCHIVE_NAME}"

if [ "$SOURCE_TYPE" = "local_build" ]; then
    # DEV: Build Flutter et créer une archive
    echo_step "Building Flutter app for DEV..."
    
    # Charger les variables d'environnement
    if [ ! -f .env-deploy-dev ]; then
        echo_error "Missing .env-deploy-dev file"
    fi
    source .env-deploy-dev
    
    # Mise à jour de la version
    echo_info "Managing version..."
    if [ -f ../VERSION ]; then
        VERSION=$(cat ../VERSION | tr -d '\n\r' | tr -d ' ')
        echo_info "Version found: $VERSION"
    else
        echo_warning "VERSION file not found"
        read -p "Enter version number (x.x.x format): " VERSION
        if [[ $VERSION =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
            echo "$VERSION" > ../VERSION
            echo_info "VERSION file created with $VERSION"
        else
            echo_error "Invalid version format"
        fi
    fi
    
    # Génération du build number et mise à jour du pubspec.yaml
    BUILD_NUMBER=$(echo $VERSION | tr -d '.')
    FULL_VERSION="${VERSION}+${BUILD_NUMBER}"
    echo_info "Full version: $FULL_VERSION"
    
    sed -i "s/^version: .*/version: $FULL_VERSION/" pubspec.yaml || echo_error "Failed to update pubspec.yaml"
    
    # Nettoyage
    echo_info "Cleaning previous builds..."
    rm -rf .dart_tool build .packages pubspec.lock 2>/dev/null || true
    flutter clean || echo_warning "Flutter clean partially failed"
    
    # Build
    echo_info "Getting dependencies..."
    flutter pub get || echo_error "Flutter pub get failed"
    
    echo_info "Cleaning generated files..."
    dart run build_runner clean || echo_error "Build runner clean failed"
    
    echo_info "Generating code files..."
    dart run build_runner build --delete-conflicting-outputs || echo_error "Code generation failed"
    
    echo_info "Building Flutter web application..."
    flutter build web --release || echo_error "Flutter build failed"
    
    echo_info "Fixing web assets structure..."
    ./copy-web-images.sh || echo_error "Failed to fix web assets"
    
    # Créer l'archive depuis le build
    echo_info "Creating archive from build..."
    tar -czf "${TEMP_ARCHIVE}" -C ${FLUTTER_BUILD_DIR} . || echo_error "Failed to create archive"
    
    create_local_backup "${TEMP_ARCHIVE}" "dev"
    
elif [ "$SOURCE_TYPE" = "local_container" ]; then
    # RCA: Créer une archive depuis le container local
    echo_step "Creating archive from local container ${SOURCE_CONTAINER}..."
    
    echo_info "Switching to Incus project ${INCUS_PROJECT}..."
    incus project switch ${INCUS_PROJECT} || echo_error "Failed to switch project"
    
    # Créer l'archive directement depuis le container local
    incus exec ${SOURCE_CONTAINER} -- tar -czf /tmp/${ARCHIVE_NAME} -C ${APP_PATH} . || echo_error "Failed to create archive from container"
    
    # Récupérer l'archive depuis le container
    incus file pull ${SOURCE_CONTAINER}/tmp/${ARCHIVE_NAME} ${TEMP_ARCHIVE} || echo_error "Failed to pull archive from container"
    incus exec ${SOURCE_CONTAINER} -- rm -f /tmp/${ARCHIVE_NAME}
    
    create_local_backup "${TEMP_ARCHIVE}" "to-rca"
    
elif [ "$SOURCE_TYPE" = "remote_container" ]; then
    # PRA: Créer une archive depuis un container distant
    echo_step "Creating archive from remote container ${SOURCE_CONTAINER} on ${SOURCE_HOST}..."
    
    # Créer l'archive sur le serveur source
    ssh -i ${HOST_KEY} -p ${HOST_PORT} ${HOST_USER}@${SOURCE_HOST} "
        incus project switch ${INCUS_PROJECT} &&
        incus exec ${SOURCE_CONTAINER} -- tar -czf /tmp/${ARCHIVE_NAME} -C ${APP_PATH} .
    " || echo_error "Failed to create archive on remote"
    
    # Extraire l'archive du container vers l'hôte
    ssh -i ${HOST_KEY} -p ${HOST_PORT} ${HOST_USER}@${SOURCE_HOST} "
        incus file pull ${SOURCE_CONTAINER}/tmp/${ARCHIVE_NAME} /tmp/${ARCHIVE_NAME} &&
        incus exec ${SOURCE_CONTAINER} -- rm -f /tmp/${ARCHIVE_NAME}
    " || echo_error "Failed to extract archive from remote container"
    
    # Copier l'archive vers la machine locale pour backup
    scp -i ${HOST_KEY} -P ${HOST_PORT} ${HOST_USER}@${SOURCE_HOST}:/tmp/${ARCHIVE_NAME} ${TEMP_ARCHIVE} || echo_error "Failed to copy archive locally"
    
    create_local_backup "${TEMP_ARCHIVE}" "to-pra"
fi

ARCHIVE_SIZE=$(du -h "${TEMP_ARCHIVE}" | cut -f1)
echo_info "Archive size: ${ARCHIVE_SIZE}"

# =====================================
# Déploiement selon la destination
# =====================================

if [ "$DEST_HOST" = "local" ]; then
    # Déploiement sur container local (DEV)
    echo_step "Deploying to local container ${DEST_CONTAINER}..."
    
    echo_info "Switching to Incus project ${INCUS_PROJECT}..."
    incus project switch ${INCUS_PROJECT} || echo_error "Failed to switch to project ${INCUS_PROJECT}"
    
    echo_info "Pushing archive to container..."
    incus file push "${TEMP_ARCHIVE}" ${DEST_CONTAINER}/tmp/${ARCHIVE_NAME} || echo_error "Failed to push archive to container"
    
    echo_info "Preparing deployment directory..."
    incus exec ${DEST_CONTAINER} -- mkdir -p ${APP_PATH} || echo_error "Failed to create deployment directory"
    incus exec ${DEST_CONTAINER} -- rm -rf ${APP_PATH}/* || echo_warning "Could not clean deployment directory"
    
    echo_info "Extracting archive..."
    incus exec ${DEST_CONTAINER} -- tar -xzf /tmp/${ARCHIVE_NAME} -C ${APP_PATH}/ || echo_error "Failed to extract archive"
    
    echo_info "Setting permissions..."
    incus exec ${DEST_CONTAINER} -- chown -R ${FINAL_OWNER}:${FINAL_GROUP} ${APP_PATH}
    incus exec ${DEST_CONTAINER} -- find ${APP_PATH} -type d -exec chmod 755 {} \;
    incus exec ${DEST_CONTAINER} -- find ${APP_PATH} -type f -exec chmod 644 {} \;
    
    echo_info "Cleaning up..."
    incus exec ${DEST_CONTAINER} -- rm -f /tmp/${ARCHIVE_NAME}
    
else
    # Déploiement sur container distant (RCA ou PRA)
    echo_step "Deploying to remote container ${DEST_CONTAINER} on ${DEST_HOST}..."
    
    # Créer une sauvegarde sur le serveur de destination
    BACKUP_TIMESTAMP=$(date +"%Y%m%d_%H%M%S")
    REMOTE_BACKUP_DIR="${APP_PATH}_backup_${BACKUP_TIMESTAMP}"
    
    echo_info "Creating backup on destination..."
    ssh -i ${HOST_KEY} -p ${HOST_PORT} ${HOST_USER}@${DEST_HOST} "
        incus project switch ${INCUS_PROJECT} &&
        incus exec ${DEST_CONTAINER} -- test -d ${APP_PATH} &&
        incus exec ${DEST_CONTAINER} -- cp -r ${APP_PATH} ${REMOTE_BACKUP_DIR} &&
        echo 'Backup created: ${REMOTE_BACKUP_DIR}'
    " || echo_warning "No existing installation to backup"
    
    # Transférer l'archive vers le serveur de destination
    echo_info "Transferring archive to ${DEST_HOST}..."
    
    if [ "$SOURCE_TYPE" = "local_container" ]; then
        # Pour RCA: copier depuis local vers distant
        scp -i ${HOST_KEY} -P ${HOST_PORT} ${TEMP_ARCHIVE} ${HOST_USER}@${DEST_HOST}:/tmp/${ARCHIVE_NAME} || echo_error "Failed to copy archive to destination"
    else
        # Pour PRA: copier de serveur à serveur
        ssh -i ${HOST_KEY} -p ${HOST_PORT} ${HOST_USER}@${SOURCE_HOST} "
            scp -i ${HOST_KEY} -P ${HOST_PORT} /tmp/${ARCHIVE_NAME} ${HOST_USER}@${DEST_HOST}:/tmp/${ARCHIVE_NAME}
        " || echo_error "Failed to transfer archive between servers"
        
        # Nettoyer sur le serveur source
        ssh -i ${HOST_KEY} -p ${HOST_PORT} ${HOST_USER}@${SOURCE_HOST} "rm -f /tmp/${ARCHIVE_NAME}"
    fi
    
    # Déployer sur le container de destination
    echo_info "Extracting on destination container..."
    ssh -i ${HOST_KEY} -p ${HOST_PORT} ${HOST_USER}@${DEST_HOST} "
        set -euo pipefail
        
        # Pousser l'archive dans le container
        incus project switch ${INCUS_PROJECT} &&
        incus file push /tmp/${ARCHIVE_NAME} ${DEST_CONTAINER}/tmp/${ARCHIVE_NAME} &&
        
        # Nettoyer et recréer le dossier
        incus exec ${DEST_CONTAINER} -- rm -rf ${APP_PATH} &&
        incus exec ${DEST_CONTAINER} -- mkdir -p ${APP_PATH} &&
        
        # Extraire l'archive
        incus exec ${DEST_CONTAINER} -- tar -xzf /tmp/${ARCHIVE_NAME} -C ${APP_PATH}/ &&
        
        # Permissions
        incus exec ${DEST_CONTAINER} -- chown -R ${FINAL_OWNER}:${FINAL_GROUP} ${APP_PATH} &&
        incus exec ${DEST_CONTAINER} -- find ${APP_PATH} -type d -exec chmod 755 {} \; &&
        incus exec ${DEST_CONTAINER} -- find ${APP_PATH} -type f -exec chmod 644 {} \; &&
        
        # Nettoyage
        incus exec ${DEST_CONTAINER} -- rm -f /tmp/${ARCHIVE_NAME} &&
        rm -f /tmp/${ARCHIVE_NAME}
    " || echo_error "Deployment failed on destination"
    
    echo_info "Remote backup saved: ${REMOTE_BACKUP_DIR} on ${DEST_CONTAINER}"
fi

# Nettoyage local
rm -f "${TEMP_ARCHIVE}"

# =====================================
# Résumé final
# =====================================

echo_step "Deployment completed successfully!"
echo_info "Environment: ${ENV_NAME}"

if [ "$TARGET_ENV" = "dev" ]; then
    echo_info "Built and deployed Flutter app to container ${DEST_CONTAINER}"
    echo_info "Version: ${FULL_VERSION}"
elif [ "$TARGET_ENV" = "rca" ]; then
    echo_info "Delivered from ${SOURCE_CONTAINER} (local) to ${DEST_CONTAINER} on ${DEST_HOST}"
elif [ "$TARGET_ENV" = "pra" ]; then
    echo_info "Delivered from ${SOURCE_CONTAINER} on ${SOURCE_HOST} to ${DEST_CONTAINER} on ${DEST_HOST}"
fi

echo_info "Deployment completed at: $(date '+%H:%M:%S')"

# Journaliser le déploiement
echo "$(date '+%Y-%m-%d %H:%M:%S') - Flutter app deployed to ${ENV_NAME} (${DEST_CONTAINER})" >> ~/.geo_deploy_history