set fallback := true

export CNPG_NAMESPACE := env("CNPG_NAMESPACE", "postgres")
export CNPG_CHART_VERSION := env("CNPG_CHART_VERSION", "0.26.0")
export CNPG_CLUSTER_CHART_VERSION := env("CNPG_CLUSTER_CHART_VERSION", "0.3.1")
export K8S_VAULT_NAMESPACE := env("K8S_VAULT_NAMESPACE", "vault")
export EXTERNAL_SECRETS_NAMESPACE := env("EXTERNAL_SECRETS_NAMESPACE", "external-secrets")

[private]
default:
    @just --list --unsorted --list-submodules

# Add Helm repository
add-helm-repo:
    @helm repo add cnpg https://cloudnative-pg.github.io/charts
    @helm repo update

# Remove Helm repository
remove-helm-repo:
    @helm repo remove cnpg

# Install CloudNativePG and create a cluster
install:
    @just install-cnpg
    @just create-cluster

# Uninstall CloudNativePG and delete the cluster
uninstall:
    @just delete-cluster
    @just uninstall-cnpg

# Install CloudNativePG
install-cnpg:
    @just add-helm-repo
    @helm upgrade --cleanup-on-fail --install cnpg cnpg/cloudnative-pg \
        --version ${CNPG_CHART_VERSION} \
        -n ${CNPG_NAMESPACE} --create-namespace --wait

# Uninstall CloudNativePG
uninstall-cnpg:
    @helm uninstall cnpg -n ${CNPG_NAMESPACE} --wait
    @kubectl delete namespace ${CNPG_NAMESPACE} --ignore-not-found

# Create Postgres cluster
create-cluster:
    #!/bin/bash
    set -euo pipefail
    if helm status external-secrets -n ${EXTERNAL_SECRETS_NAMESPACE} &>/dev/null; then
        echo "External Secrets Operator detected. Creating admin credentials via ExternalSecret..."
        password=$(just utils::random-password)
        just vault::put-root postgres/admin username=postgres password="${password}"

        kubectl delete externalsecret postgres-cluster-superuser -n ${CNPG_NAMESPACE} --ignore-not-found
        gomplate -f postgres-superuser-external-secret.gomplate.yaml | kubectl apply -f -

        echo "Waiting for ExternalSecret to sync..."
        kubectl wait --for=condition=Ready externalsecret/postgres-cluster-superuser \
            -n ${CNPG_NAMESPACE} --timeout=60s
    else
        echo "External Secrets Operator not found. Creating superuser secret directly..."
        password=$(just utils::random-password)
        kubectl delete secret postgres-cluster-superuser -n ${CNPG_NAMESPACE} --ignore-not-found
        kubectl create secret generic postgres-cluster-superuser -n ${CNPG_NAMESPACE} \
            --from-literal=username=postgres \
            --from-literal=password="${password}"

        if helm status vault -n ${K8S_VAULT_NAMESPACE} &>/dev/null; then
            just vault::put-root postgres/admin username=postgres password="${password}"
        fi
    fi

    helm upgrade --install postgres-cluster cnpg/cluster \
        --version ${CNPG_CLUSTER_CHART_VERSION} \
        -n ${CNPG_NAMESPACE} --wait -f postgres-cluster-values.yaml

    echo "Waiting for PostgreSQL cluster to be ready..."
    kubectl wait --for=condition=Ready clusters.postgresql.cnpg.io/postgres-cluster \
        -n ${CNPG_NAMESPACE} --timeout=300s

# Delete Postgres cluster
delete-cluster:
    @helm uninstall postgres-cluster -n ${CNPG_NAMESPACE} --ignore-not-found --wait
    @kubectl delete externalsecret postgres-cluster-superuser -n ${CNPG_NAMESPACE} --ignore-not-found
    @kubectl delete secret postgres-cluster-superuser -n ${CNPG_NAMESPACE} --ignore-not-found

# Print Postgres username
admin-username:
    @echo "postgres"

# Print Postgres password
admin-password:
    @kubectl get -n ${CNPG_NAMESPACE} secret postgres-cluster-superuser \
        -o jsonpath="{.data.password}" | base64 --decode
    @echo

# Create Postgres database
create-db db_name='':
    #!/bin/bash
    set -euo pipefail
    DB_NAME=${DB_NAME:-{{ db_name }}}
    while [ -z "${DB_NAME}" ]; do
        DB_NAME=$(gum input --prompt="Database name: " --width=100)
    done
    if just db-exists ${DB_NAME} &>/dev/null; then
        echo "Database ${DB_NAME} already exists" >&2
        exit
    fi
    echo "Creating database ${DB_NAME}..."
    just psql -c "\"CREATE DATABASE ${DB_NAME};\""
    echo "Database ${DB_NAME} created."

# Delete Postgres database
delete-db db_name='':
    #!/bin/bash
    set -euo pipefail
    DB_NAME=${DB_NAME:-{{ db_name }}}
    if ! just db-exists ${DB_NAME} &>/dev/null; then
        echo "Database ${DB_NAME} does not exist." >&2
        exit
    fi
    # Terminate all connections to the database
    just psql -c "\"SELECT pg_terminate_backend(pid) FROM pg_stat_activity
        WHERE datname = '${DB_NAME}' AND pid <> pg_backend_pid();\""
    # Force disconnect if needed
    just psql -c "\"UPDATE pg_database SET datallowconn = false WHERE datname = '${DB_NAME}';\""
    just psql -c "\"SELECT pg_terminate_backend(pid) FROM pg_stat_activity
        WHERE datname = '${DB_NAME}';\""
    just psql -c "\"DROP DATABASE ${DB_NAME};\""
    echo "Database ${DB_NAME} deleted."

# Check if database exists
[no-exit-message]
db-exists db_name='':
    #!/bin/bash
    set -euo pipefail
    DB_NAME=${DB_NAME:-{{ db_name }}}
    while [ -z "${DB_NAME}" ]; do
        DB_NAME=$(gum input --prompt="Database name: " --width=100)
    done
    if echo '\l' | just postgres::psql | grep -E "^ *${DB_NAME} *\|" &>/dev/null; then
        echo "Database ${DB_NAME} exists."
    else
        echo "Database ${DB_NAME} does not exist." >&2
        exit 1
    fi

# Create Postgres user
create-user username='' password='':
    #!/bin/bash
    set -euo pipefail
    USERNAME=${USERNAME:-"{{ username }}"}
    PASSWORD=${PASSWORD:-"{{ password }}"}
    while [ -z "${USERNAME}" ]; do
        USERNAME=$(gum input --prompt="Username: " --width=100)
    done
    if just user-exists ${USERNAME} &>/dev/null; then
        echo "User ${USERNAME} already exists" >&2
        exit
    fi
    if [ -z "${PASSWORD}" ]; then
        PASSWORD=$(gum input --prompt="Password: " --password --width=100 \
            --placeholder="Empty to generate a random password")
    fi
    if [ -z "${PASSWORD}" ]; then
        PASSWORD=$(just random-password)
        echo "Generated random password: ${PASSWORD}"
    fi
    just psql -c "\"CREATE USER ${USERNAME} WITH LOGIN PASSWORD '${PASSWORD}';\""
    echo "User ${USERNAME} created."

# Delete Postgres user
delete-user username='':
    #!/bin/bash
    set -euo pipefail
    USERNAME=${USERNAME:-"{{ username }}"}
    if ! just user-exists ${USERNAME} &>/dev/null; then
        echo "User ${USERNAME} does not exist." >&2
        exit
    fi
    just psql -c "\"ALTER DEFAULT PRIVILEGES FOR ROLE postgres IN SCHEMA public REVOKE ALL ON TABLES FROM ${USERNAME};\""
    just psql -c "\"ALTER DEFAULT PRIVILEGES FOR ROLE postgres IN SCHEMA public REVOKE ALL ON SEQUENCES FROM ${USERNAME};\""
    just psql -c "\"ALTER DEFAULT PRIVILEGES FOR ROLE postgres IN SCHEMA public REVOKE ALL ON FUNCTIONS FROM ${USERNAME};\""
    just psql -c "\"ALTER DEFAULT PRIVILEGES FOR ROLE postgres IN SCHEMA public REVOKE ALL ON TYPES FROM ${USERNAME};\""
    just psql -c "\"ALTER SCHEMA public OWNER TO postgres;\""
    just psql -c "\"DROP USER ${USERNAME};\""
    echo "User ${USERNAME} deleted."

# Check if user exists
[no-exit-message]
user-exists username='':
    #!/bin/bash
    set -euo pipefail
    USERNAME=${USERNAME:-"{{ username }}"}
    while [ -z "${USERNAME}" ]; do
        USERNAME=$(gum input --prompt="Username: " --width=100)
    done
    if echo '\du' | just postgres::psql | grep -E "^ *${USERNAME} *\|" &>/dev/null; then
        echo "User ${USERNAME} exists."
    else
        echo "User ${USERNAME} does not exist." >&2
        exit 1
    fi

# Change user password
change-password username='' password='':
    #!/bin/bash
    set -euo pipefail
    USERNAME=${USERNAME:-"{{ username }}"}
    PASSWORD=${PASSWORD:-"{{ password }}"}
    while [ -z "${USERNAME}" ]; do
        USERNAME=$(gum input --prompt="Username: " --width=100)
    done
    if ! just user-exists ${USERNAME} &>/dev/null; then
        echo "User ${USERNAME} does not exist." >&2
        exit 1
    fi
    if [ -z "${PASSWORD}" ]; then
        PASSWORD=$(gum input --prompt="New password: " --password --width=100 \
            --placeholder="Empty to generate a random password")
    fi
    if [ -z "${PASSWORD}" ]; then
        PASSWORD=$(just utils::random-password)
        echo "Generated random password: ${PASSWORD}"
    fi
    just psql -c "\"ALTER USER ${USERNAME} WITH PASSWORD '${PASSWORD}';\""
    echo "Password changed for user ${USERNAME}."

# Grant all privileges on database to user
grant db_name='' username='':
    #!/bin/bash
    set -euo pipefail
    DB_NAME=${DB_NAME:-"{{ db_name }}"}
    USERNAME=${USERNAME:-"{{ username }}"}
    while [ -z "${DB_NAME}" ]; do
        DB_NAME=$(gum input --prompt="Database name: " --width=100)
    done
    while [ -z "${USERNAME}" ]; do
        USERNAME=$(gum input --prompt="Username: " --width=100)
    done
    if ! just psql ${DB_NAME} -U postgres -P pager=off -c "\"SELECT 1;\""; then
        echo "Database ${DB_NAME} does not exist." >&2
        exit 1
    fi
    just psql -c "\"GRANT ALL PRIVILEGES ON DATABASE ${DB_NAME} TO ${USERNAME};\""
    # Grant CREATE permission on public schema (needed for PostgreSQL 15+)
    just psql -d ${DB_NAME} -c "\"GRANT CREATE ON SCHEMA public TO ${USERNAME};\""
    echo "Privileges granted."

# Revoke all privileges on database from user
revoke db_name='' username='':
    #!/bin/bash
    set -euo pipefail
    DB_NAME=${DB_NAME:-"{{ db_name }}"}
    USERNAME=${USERNAME:-"{{ username }}"}
    while [ -z "${DB_NAME}" ]; do
        DB_NAME=$(gum input --prompt="Database name: " --width=100)
    done
    while [ -z "${USERNAME}" ]; do
        USERNAME=$(gum input --prompt="Username: " --width=100)
    done
    if ! just psql -U postgres ${DB_NAME} -P pager=off -c "\"SELECT 1;\""; then
        echo "Database ${DB_NAME} does not exist." >&2
        exit 1
    fi
    just psql -c "\"REVOKE ALL PRIVILEGES ON DATABASE ${DB_NAME} FROM ${USERNAME};\""
    echo "Privileges revoked."

# Create Postgres database and user
create-user-and-db username='' db_name='' password='':
    just create-db "{{ db_name }}"
    just create-user "{{ username }}" "{{ password }}"
    just grant "{{ db_name }}" "{{ username }}"

# Delete Postgres database and user
delete-user-and-db username='' db_name='':
    #!/bin/bash
    set -euo pipefail
    DB_NAME=${DB_NAME:-"{{ db_name }}"}
    USERNAME=${USERNAME:-"{{ username }}"}
    if just db-exists ${DB_NAME} &>/dev/null; then
        if just user-exists ${USERNAME} &>/dev/null; then
            just revoke "${DB_NAME}" "${USERNAME}"
        else
            echo "User ${USERNAME} does not exist, skipping revoke."
        fi
        just delete-db "${DB_NAME}"
    else
        echo "Database ${DB_NAME} does not exist, skipping database deletion."
    fi
    if just user-exists ${USERNAME} &>/dev/null; then
        just delete-user "${USERNAME}"
    else
        echo "User ${USERNAME} does not exist, skipping user deletion."
    fi
    echo "Cleanup completed."

# Create logical replication slot for CDC
create-replication-slot slot_name='' db_name='postgres' plugin='pgoutput':
    #!/bin/bash
    set -euo pipefail
    SLOT_NAME=${SLOT_NAME:-"{{ slot_name }}"}
    DB_NAME=${DB_NAME:-"{{ db_name }}"}
    PLUGIN=${PLUGIN:-"{{ plugin }}"}
    while [ -z "${SLOT_NAME}" ]; do
        SLOT_NAME=$(gum input --prompt="Replication slot name: " --width=100 \
            --placeholder="e.g., airbyte_slot")
    done
    if kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d ${DB_NAME} -tAc \
        "SELECT slot_name FROM pg_replication_slots WHERE slot_name = '${SLOT_NAME}';" | grep -q "${SLOT_NAME}"; then
        echo "Replication slot '${SLOT_NAME}' already exists."
        exit 0
    fi
    echo "Creating replication slot '${SLOT_NAME}' with plugin '${PLUGIN}'..."
    kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d ${DB_NAME} -c \
        "SELECT pg_create_logical_replication_slot('${SLOT_NAME}', '${PLUGIN}');"
    echo "Replication slot '${SLOT_NAME}' created."

# Delete replication slot
delete-replication-slot slot_name='' db_name='postgres':
    #!/bin/bash
    set -euo pipefail
    SLOT_NAME=${SLOT_NAME:-"{{ slot_name }}"}
    DB_NAME=${DB_NAME:-"{{ db_name }}"}
    while [ -z "${SLOT_NAME}" ]; do
        SLOT_NAME=$(gum input --prompt="Replication slot name to delete: " --width=100)
    done
    if ! kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d ${DB_NAME} -tAc \
        "SELECT slot_name FROM pg_replication_slots WHERE slot_name = '${SLOT_NAME}';" | grep -q "${SLOT_NAME}"; then
        echo "Replication slot '${SLOT_NAME}' does not exist."
        exit 1
    fi
    echo "Deleting replication slot '${SLOT_NAME}'..."
    kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d ${DB_NAME} -c \
        "SELECT pg_drop_replication_slot('${SLOT_NAME}');"
    echo "Replication slot '${SLOT_NAME}' deleted."

# List all replication slots
list-replication-slots:
    @echo "Replication slots:"
    @kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d postgres -c \
        "SELECT slot_name, plugin, slot_type, database, active, restart_lsn FROM pg_replication_slots;"

# Create publication for CDC
create-publication pub_name='' db_name='' tables='':
    #!/bin/bash
    set -euo pipefail
    PUB_NAME=${PUB_NAME:-"{{ pub_name }}"}
    DB_NAME=${DB_NAME:-"{{ db_name }}"}
    TABLES="${TABLES:-{{ tables }}}"
    while [ -z "${PUB_NAME}" ]; do
        PUB_NAME=$(gum input --prompt="Publication name: " --width=100 \
            --placeholder="e.g., airbyte_publication")
    done
    while [ -z "${DB_NAME}" ]; do
        DB_NAME=$(gum input --prompt="Database name: " --width=100)
    done
    if kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d ${DB_NAME} -tAc \
        "SELECT pubname FROM pg_publication WHERE pubname = '${PUB_NAME}';" | grep -q "${PUB_NAME}"; then
        echo "Publication '${PUB_NAME}' already exists in database '${DB_NAME}'."
        exit 0
    fi
    if [ -z "${TABLES}" ]; then
        echo "Select tables to include in publication:"
        echo "1) All tables (ALL TABLES)"
        echo "2) All user tables (exclude system/internal tables)"
        echo "3) Specific tables (comma-separated list)"
        CHOICE=$(gum choose "All tables" "User tables only" "Specific tables")
        case "${CHOICE}" in
            "All tables")
                TABLES="ALL TABLES"
                ;;
            "User tables only")
                # Get list of user tables (excluding _airbyte* and other system tables)
                USER_TABLES=$(kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
                    psql -U postgres -d ${DB_NAME} -tAc \
                    "SELECT string_agg(tablename, ', ') FROM pg_tables
                     WHERE schemaname = 'public'
                     AND tablename NOT LIKE '\_%'
                     AND tablename NOT LIKE 'pg_%';")
                if [ -z "${USER_TABLES}" ]; then
                    echo "No user tables found in database '${DB_NAME}'"
                    exit 1
                fi
                TABLES="TABLE ${USER_TABLES}"
                echo "Including tables: ${USER_TABLES}"
                ;;
            "Specific tables")
                TABLES=$(gum input --prompt="Enter table names (comma-separated): " --width=100 \
                    --placeholder="e.g., users, products, orders")
                TABLES="TABLE ${TABLES}"
                ;;
        esac
    elif [ "${TABLES}" = "ALL" ]; then
        TABLES="ALL TABLES"
    fi
    echo "Creating publication '${PUB_NAME}' in database '${DB_NAME}'..."
    kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d ${DB_NAME} -c \
        "CREATE PUBLICATION ${PUB_NAME} FOR ${TABLES};"
    if [ "${TABLES}" != "ALL TABLES" ]; then
        echo "Setting REPLICA IDENTITY for included tables..."
        TABLE_LIST=$(echo "${TABLES}" | sed 's/TABLE //')
        IFS=',' read -ra TABLE_ARRAY <<< "${TABLE_LIST}"
        for table in "${TABLE_ARRAY[@]}"; do
            table=$(echo "$table" | xargs)  # trim whitespace
            kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
                psql -U postgres -d ${DB_NAME} -c \
                "ALTER TABLE ${table} REPLICA IDENTITY FULL;" 2>/dev/null || true
        done
    fi
    echo "Publication '${PUB_NAME}' created."

# Delete publication
delete-publication pub_name='' db_name='':
    #!/bin/bash
    set -euo pipefail
    PUB_NAME=${PUB_NAME:-"{{ pub_name }}"}
    DB_NAME=${DB_NAME:-"{{ db_name }}"}
    while [ -z "${PUB_NAME}" ]; do
        PUB_NAME=$(gum input --prompt="Publication name to delete: " --width=100)
    done
    while [ -z "${DB_NAME}" ]; do
        DB_NAME=$(gum input --prompt="Database name: " --width=100)
    done
    if ! kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d ${DB_NAME} -tAc \
        "SELECT pubname FROM pg_publication WHERE pubname = '${PUB_NAME}';" | grep -q "${PUB_NAME}"; then
        echo "Publication '${PUB_NAME}' does not exist in database '${DB_NAME}'."
        exit 1
    fi
    echo "Deleting publication '${PUB_NAME}' from database '${DB_NAME}'..."
    kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d ${DB_NAME} -c \
        "DROP PUBLICATION ${PUB_NAME};"
    echo "Publication '${PUB_NAME}' deleted."

# List all publications in a database
list-publications db_name='':
    #!/bin/bash
    set -euo pipefail
    DB_NAME=${DB_NAME:-"{{ db_name }}"}
    while [ -z "${DB_NAME}" ]; do
        DB_NAME=$(gum input --prompt="Database name: " --width=100)
    done
    echo "Publications in database '${DB_NAME}':"
    kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d ${DB_NAME} -c \
        "SELECT pubname, puballtables, pubinsert, pubupdate, pubdelete FROM pg_publication;"

# Grant CDC privileges to user
grant-cdc-privileges username='' db_name='':
    #!/bin/bash
    set -euo pipefail
    USERNAME=${USERNAME:-"{{ username }}"}
    DB_NAME=${DB_NAME:-"{{ db_name }}"}
    while [ -z "${USERNAME}" ]; do
        USERNAME=$(gum input --prompt="Username to grant CDC privileges: " --width=100)
    done
    while [ -z "${DB_NAME}" ]; do
        DB_NAME=$(gum input --prompt="Database name: " --width=100)
    done
    echo "Granting CDC privileges to user '${USERNAME}' on database '${DB_NAME}'..."
    kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d ${DB_NAME} -c "ALTER USER ${USERNAME} WITH REPLICATION;"
    echo "Granting schema and table privileges..."
    kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d ${DB_NAME} -c \
        "GRANT USAGE ON SCHEMA public TO ${USERNAME};
         GRANT CREATE ON SCHEMA public TO ${USERNAME};
         GRANT SELECT ON ALL TABLES IN SCHEMA public TO ${USERNAME};
         ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO ${USERNAME};"
    echo "Granting pg_read_all_data role..."
    kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d ${DB_NAME} -c "GRANT pg_read_all_data TO ${USERNAME};" 2>/dev/null || true
    echo "CDC privileges granted to user '${USERNAME}'"

# Setup CDC (Change Data Capture)
setup-cdc db_name='' slot_name='' pub_name='' username='':
    #!/bin/bash
    set -euo pipefail
    DB_NAME=${DB_NAME:-"{{ db_name }}"}
    SLOT_NAME=${SLOT_NAME:-"{{ slot_name }}"}
    PUB_NAME=${PUB_NAME:-"{{ pub_name }}"}
    USERNAME=${USERNAME:-"{{ username }}"}
    while [ -z "${DB_NAME}" ]; do
        DB_NAME=$(gum input --prompt="Database name for CDC setup: " --width=100)
    done
    while [ -z "${SLOT_NAME}" ]; do
        SLOT_NAME=$(gum input --prompt="Replication slot name: " --width=100 \
            --placeholder="e.g., demo_slot")
    done
    while [ -z "${PUB_NAME}" ]; do
        PUB_NAME=$(gum input --prompt="Publication name: " --width=100 \
            --placeholder="e.g., demo_pub")
    done
    echo "Setting up CDC on database '${DB_NAME}'..."
    WAL_LEVEL=$(kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d postgres -tAc "SHOW wal_level;")
    if [ "${WAL_LEVEL}" != "logical" ]; then
        echo "WARNING: wal_level is '${WAL_LEVEL}', should be 'logical' for CDC"
        echo "Please ensure PostgreSQL is configured with wal_level=logical"
        exit 1
    fi
    just create-replication-slot "${SLOT_NAME}" "${DB_NAME}"
    just create-publication "${PUB_NAME}" "${DB_NAME}"
    if [ -n "${USERNAME}" ]; then
        echo ""
        just grant-cdc-privileges "${USERNAME}" "${DB_NAME}"
    fi
    echo ""
    echo "CDC setup completed for database '${DB_NAME}'"
    echo "  Replication Method: Logical Replication (CDC)"
    echo "  Replication Slot: ${SLOT_NAME}"
    echo "  Publication: ${PUB_NAME}"
    if [ -n "${USERNAME}" ]; then
        echo "  User with CDC privileges: ${USERNAME}"
    fi

# Cleanup CDC (removes slot and publication)
cleanup-cdc db_name='' slot_name='' pub_name='':
    #!/bin/bash
    set -euo pipefail
    DB_NAME=${DB_NAME:-"{{ db_name }}"}
    SLOT_NAME=${SLOT_NAME:-"{{ slot_name }}"}
    PUB_NAME=${PUB_NAME:-"{{ pub_name }}"}

    while [ -z "${DB_NAME}" ]; do
        DB_NAME=$(gum input --prompt="Database name for CDC cleanup: " --width=100)
    done
    while [ -z "${SLOT_NAME}" ]; do
        SLOT_NAME=$(gum input --prompt="Replication slot name to delete: " --width=100 \
            --placeholder="e.g., demo_slot")
    done
    while [ -z "${PUB_NAME}" ]; do
        PUB_NAME=$(gum input --prompt="Publication name to delete: " --width=100 \
            --placeholder="e.g., demo_pub")
    done
    echo "Cleaning up CDC configuration for database '${DB_NAME}'..."

    # Check if slot is active
    SLOT_ACTIVE=$(kubectl exec -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- \
        psql -U postgres -d postgres -tAc \
        "SELECT active FROM pg_replication_slots WHERE slot_name = '${SLOT_NAME}';" 2>/dev/null || echo "")
    if [ "${SLOT_ACTIVE}" = "t" ]; then
        echo "WARNING: Replication slot '${SLOT_NAME}' is currently active!"
        echo "Please stop any active replication connections first."
        if ! gum confirm "Proceed with deletion anyway?"; then
            echo "Cleanup cancelled"
            exit 1
        fi
    fi

    # Delete in correct order: Slot first, then Publication
    echo "Step 1: Deleting replication slot '${SLOT_NAME}'..."
    just delete-replication-slot "${SLOT_NAME}" "${DB_NAME}" || \
        echo "Replication slot '${SLOT_NAME}' not found or already deleted"

    echo "Step 2: Deleting publication '${PUB_NAME}'..."
    just delete-publication "${PUB_NAME}" "${DB_NAME}" || \
        echo "Publication '${PUB_NAME}' not found or already deleted"

    echo "CDC cleanup completed for database '${DB_NAME}'"

# Run psql
[no-exit-message]
psql *args='':
    @kubectl exec -it -n postgres postgres-cluster-1 -c postgres -- psql {{ args }}

# Dump Postgres database by pg_dump
[no-cd]
dump db_name file exclude_tables='':
    #!/bin/bash
    set -euo pipefail

    DUMP_OPTIONS="-Fc"
    if [ -n "{{ exclude_tables }}" ]; then
        IFS=',' read -ra TABLES <<< "{{ exclude_tables }}"
        for table in "${TABLES[@]}"; do
            DUMP_OPTIONS="$DUMP_OPTIONS --exclude-table=$table"
        done
    fi

    kubectl exec -i -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- bash -c \
        "pg_dump -d postgresql://$(just postgres::admin-username):$(just postgres::admin-password)@localhost/{{ db_name }} $DUMP_OPTIONS > \
        /var/lib/postgresql/data/db.dump"
    kubectl cp -n ${CNPG_NAMESPACE} -c postgres \
        postgres-cluster-1:/var/lib/postgresql/data/db.dump {{ file }}
    kubectl exec -i -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- rm /var/lib/postgresql/data/db.dump

# Restore Postgres database by pg_restore
[no-cd]
restore db_name file:
    just postgres::create-db {{ db_name }}
    kubectl cp {{ file }} -n ${CNPG_NAMESPACE} -c postgres \
        postgres-cluster-1:/var/lib/postgresql/data/db.dump
    kubectl exec -i -n ${CNPG_NAMESPACE} postgres-cluster-1 -c postgres -- bash -c \
        "pg_restore --clean --if-exists \
        -d postgresql://$(just postgres::admin-username):$(just postgres::admin-password)@localhost/{{ db_name }} \
        /var/lib/postgresql/data/db.dump"