#!/bin/bash
# Shared library for all Odoo containers (17 / 18 / 19).
# Sourced by start/odoo, nuke/odoo, and admin tools.
# Requires: helpers already sourced (provides log/warn/die).

# ---------------------------------------------------------------------------
# dump_config — print all resolved variables for debugging
# ---------------------------------------------------------------------------
dump_config() {
    log "========== Odoo Container Configuration =========="
    log "CONTAINER_ID:      $CONTAINER_ID"
    log "DB_NAME:           $DB_NAME"
    log "IMAGE_TAG:         $IMAGE_TAG"
    log "BRANCH:            $BRANCH"
    log ""
    log "PostgreSQL Host:   $POSTGRES_HOST"
    log "PostgreSQL Port:   $POSTGRES_PORT"
    log "ODOO DB User:      $ODOO_DB_USER"
    log ""
    log "BASEURL:           $BASEURL"
    log "SERVER_IP:         $SERVER_IP"
    log "PORT:              $PORT"
    log "=================================================="
}

# ---------------------------------------------------------------------------
# build_traefik_rule
# Reads CONTAINER_ID and BASEURL from env. Resolves each candidate domain via
# nslookup and builds a Traefik Host() rule containing only domains that point
# to this server. Exports DOMAIN_LABEL.
# ---------------------------------------------------------------------------
build_traefik_rule() {
    local server_ip
    server_ip=$(ip -4 addr show eth0 | awk '/inet/ {print $2}' | cut -d/ -f1 | head -n1)

    local domains=("$CONTAINER_ID.odoo4projects.com")
    if [ -f "$BASEURL/etc/domain" ]; then
        while IFS= read -r domain || [ -n "$domain" ]; do
            [ -z "$domain" ] && continue
            domains+=("$domain")
        done < "$BASEURL/etc/domain"
    fi

    local rule=""
    for d in "${domains[@]}"; do
        local resolved_ip
        resolved_ip=$(nslookup "$d" 2>/dev/null | awk '/^Address: / { print $2 }' | head -n1 || true)
        if [ -z "$resolved_ip" ]; then
            warn "build_traefik_rule: could not resolve $d, skipping"
            continue
        fi
        if [ "$resolved_ip" = "$server_ip" ]; then
            rule+=" || Host(\`$d\`)"
        else
            warn "build_traefik_rule: $d resolves to $resolved_ip, not $server_ip — skipping"
        fi
    done

    rule="${rule# || }"
    if [ -z "$rule" ]; then
        die "build_traefik_rule: no valid domains resolved for $CONTAINER_ID — cannot start container"
    fi

    DOMAIN_LABEL="traefik.http.routers.$CONTAINER_ID.rule=$rule"
    log "Traefik rule: $DOMAIN_LABEL"
}

# ---------------------------------------------------------------------------
# check_and_create_db
# Creates the postgres user and database if they don't exist yet.
# On a brand-new container this triggers a restore from default.zip.
# Requires: DB_NAME, ODOO_DB_USER, ODOO_DB_PASSWORD, POSTGRES_* from env.
# ---------------------------------------------------------------------------
check_and_create_db() {
    local _dbname="${DB_NAME:-$CONTAINER_ID}"
    local _dbuser="${ODOO_DB_USER:-$_dbname}"

    log "check_and_create_db: user=$_dbuser db=$_dbname host=$POSTGRES_HOST"

    # --- user ---
    local _user_result
    _user_result=$(PGPASSWORD="$POSTGRES_ADMIN_PASSWORD" psql \
        -h "$POSTGRES_HOST" -U "$POSTGRES_ADMIN_USER" -p "$POSTGRES_PORT" \
        -d postgres -tAc "SELECT 1 FROM pg_roles WHERE rolname='$_dbuser';" 2>&1) \
        || die "check_and_create_db: psql connection failed: $_user_result"

    if ! echo "$_user_result" | grep -q 1; then
        log "Creating PostgreSQL user $_dbuser"
        PGPASSWORD="$POSTGRES_ADMIN_PASSWORD" psql \
            -h "$POSTGRES_HOST" -U "$POSTGRES_ADMIN_USER" -p "$POSTGRES_PORT" \
            -d postgres -c "CREATE USER \"$_dbuser\" WITH PASSWORD '$ODOO_DB_PASSWORD';" \
            || die "check_and_create_db: failed to create user $_dbuser"
    fi

    # --- database ---
    local _db_result
    _db_result=$(PGPASSWORD="$POSTGRES_ADMIN_PASSWORD" psql \
        -h "$POSTGRES_HOST" -U "$POSTGRES_ADMIN_USER" -p "$POSTGRES_PORT" \
        -d postgres -tAc "SELECT 1 FROM pg_database WHERE datname='$_dbname';" 2>&1) \
        || die "check_and_create_db: psql connection failed: $_db_result"

    if ! echo "$_db_result" | grep -q 1; then
        log "Database $_dbname not found — restoring from default.zip"
        "$SBIN_ROOT/odoo/restore" "$CONTAINER_ID" default.zip \
            || die "check_and_create_db: restore failed for $_dbname"
    fi
}