#!/usr/bin/env bash

# shellcheck disable=SC2120

# ===========================================
# Load
# ===========================================

function docker::on_load() { load_module 'docker/*'; }

# ===========================================
# Docker
# ===========================================
# Non-interactive docker calls — bypasses all shell aliases.
function docker::raw() {
  command docker "$@"
}

# Interactive docker calls that need a TTY.
# On Windows: prepends winpty to allocate a pseudo-terminal.
# On Unix: same as docker::raw.
function docker::tty() {
  if platform::is_windows; then
	  winpty docker "$@"
  else
	  command docker "$@"
  fi
}

function docker::exec() {
  local container="$1"
  shift

  docker::tty exec -it "$container" "$@"
}
function docker::container_running() {
  local name="$1"

  docker::raw ps --format '{{.Names}}' \
    | grep -qx "$name"
}
function docker::container_exists() {
  local name="$1"

  docker::raw ps -a --format '{{.Names}}' \
    | grep -qx "$name"
}
function docker::build() {
  local dockerfile=$(docker::image::file)

  local tag="${APP_IMAGE}:${ENVIRONMENT}"

  require_file "$dockerfile" || {
    log::docker_error "Dockerfile not found for environment $ENVIRONMENT (Dockerfile-${ENVIRONMENT})!"
    return 1
  }

  log::docker_build "Building image ${tag}..."

  if docker::raw build -f "$dockerfile" -t "$tag" "$(ctx::root)"; then
    log::docker_success "Image built: ${tag}"
  else
    log::docker_error "Failed to build image: ${tag}"
    return 1
  fi
}
function docker::list_containers() {
  docker::raw ps --filter "name=${PROJECT_NAME}" \
    --format "table {{.Names}}\t{{.Image}}\t{{.Status}}\t{{.Ports}}"
}
function docker::status() {
  local container="$1"

  if ! docker::raw inspect "$container" >/dev/null 2>&1; then
    echo "missing"
    return
  fi

  docker::raw inspect -f '{{.State.Status}}' "$container"
}
function docker::health() {
  local container="$1"

  local health
  health="$(docker::raw inspect -f '{{.State.Health.Status}}' "$container" 2>/dev/null)"

  if [[ -z "$health" || "$health" == "<no value>" ]]; then
    echo "unknown"
  else
    echo "$health"
  fi
}
function docker::inside_container() {
  [[ -f /.dockerenv ]]
}

# ===========================================
# Compose
# ===========================================
function docker::compose() {
  local stackName="docker-compose-${ENVIRONMENT}.yml"

  require_file "$(docker::compose::file)" || {
    log::docker_error "Docker Compose Stack not found for Environment $ENVIRONMENT ($stackName)!"
    return 1
  }

  if core::has_tty; then
    docker::tty compose -p "${PROJECT_NAME}_${ENVIRONMENT}" -f "$(docker::compose::file)" "$@"
  else
    docker::raw compose -p "${PROJECT_NAME}_${ENVIRONMENT}" -f "$(docker::compose::file)" "$@"
  fi
}
function docker::compose::interactive() {
  local file
  file="$(docker::compose::file)"

  require_file "$file" || {
    log::docker_error "Missing compose file"
    return 1
  }

  docker::tty compose \
    -p "${PROJECT_NAME}_${ENVIRONMENT}" \
    -f "$file" \
    "$@"
}
function docker::compose::default_service() { echo "app"; }
function docker::compose::service_running() {
  local service="${1:-app}"

  local id
  id="$(docker::compose ps -q "$service" 2>/dev/null)"
  id="${id//$'\r'/}"  # strip carriage returns using parameter expansion, no pipe

  [[ -n "$id" ]]
}
function docker::compose::ensure_running() {
  local service="${1:-app}"

  if ! docker::compose::service_running "$service"; then
    log::docker_start "Stack not running, starting..."
    docker::compose up -d
  fi
}
function docker::compose::logs() {
  docker::compose logs -f
}
function docker::compose::up() {
  docker::compose up -d --remove-orphans \
    && { log::docker_start "Stack started for Environment $ENVIRONMENT"; } \
    || { log::docker_error "Failed to start Stack for Environment $ENVIRONMENT"; return 1; }
}
function docker::compose::down() {
  docker::compose down \
    && { log::docker_stop "Stack stopped for Environment $ENVIRONMENT"; } \
    || { log::docker_error "Failed to stop Stack for Environment $ENVIRONMENT"; return 1; }
}
function docker::compose::status() {
  local service="${1:-$(docker::compose::default_service)}"

  local id
  id="$(docker::compose::container "$service")" || {
    echo "missing"
    return
  }

  docker::raw inspect -f '{{.State.Status}}' "$id"
}
function docker::compose::exec() {
  local service="$1"
  shift

  docker::compose::interactive exec "$service" "$@"
}
function docker::compose::container() {
  local service="$1"
  docker::compose ps -q "$service"
}
function docker::compose::service_exists() {
  local service="${1:-$(docker::compose::default_service)}"
  [[ -n "$(docker::compose::container "$service")" ]]
}
function docker::compose::list_containers() {
  docker::compose ps \
    --format "table {{.Name}}\t{{.Service}}\t{{.Status}}\t{{.Ports}}"
}
function docker::compose::ports() {
  local service="${1:-$(docker::compose::default_service)}"

  local id
  id="$(docker::compose::container "$service")" || return 1

  docker::raw port "$id" 2>/dev/null
}

# ===========================================
# Paths
# ===========================================
function docker::path() {
  local dir=""
  local file=""

  if [[ $# -eq 1 ]]; then
    file="$1"
  else
    dir="$1"
    file="$2"
  fi

  if [[ -n "$dir" ]]; then
    echo "$(ctx::docker)/$dir/$file"
  else
    echo "$(ctx::docker)/$file"
  fi
}
function docker::path::relative()       { path::relative_to      "$(ctx::docker)" "$1"; }
function docker::image::file()          { platform::docker_path  "$(ctx::docker)/Dockerfile-${ENVIRONMENT}"; }
function docker::compose::file()        { platform::docker_path  "$(ctx::docker)/docker-compose-${ENVIRONMENT}.yml"; }
function docker::image::path()          { path::relative_to_root "$(ctx::docker)/Dockerfile-${ENVIRONMENT}"; }
function docker::compose::path()        { path::relative_to_root "$(ctx::docker)/docker-compose-${ENVIRONMENT}.yml"; }
function docker::app::path()            { docker::path::relative "$(ctx::root)"; }
function docker::apache::logs_path()    { docker::path::relative "$(ctx::artifact)/apache/logs"; }
function docker::apache::vhosts_path()  { docker::path::relative "$(ctx::artifact)/apache/vhosts"; }
function docker::apache::certs_path()   { docker::path::relative "$(ctx::artifact)/apache/certificates"; }
function docker::apache::xdebug_path()  { docker::path::relative "$(ctx::artifact)/php/xdebug.ini"; }

# ===========================================
# Render
# ===========================================
function docker::compose::render_volume() {
  local host="$1"
  local container="$2"

  echo "- ${host}:${container}"
}
function docker::compose::db_volume() {
  docker::compose::render_volume \
    "$(docker::path::relative "$(db::volume_host_path)")" \
    "$(db::volume_container_path)"
}

function docker::compose::volume() { docker::compose::render_volume "$(docker::path::relative "$1")" "$2"; }

# ===========================================
# Generation
# ===========================================
function docker::image::generate() {
  local tag="${APP_IMAGE}:${ENVIRONMENT}"
  log::docker_build "Generating Docker Image ($tag)..."

  template::render \
    "$(template::path docker Dockerfile)" \
    "$(docker::image::path)"
}
function docker::compose::generate() {
  log::docker_build "Generating Docker Compose Stack (${ENVIRONMENT})..."

  template::render \
    "$(template::path docker docker-compose.yml)" \
    "$(docker::compose::path)" \
    ENVIRONMENT="$ENVIRONMENT" \
    APP_IMAGE="$APP_IMAGE" \
    CTX_BUILD="$(docker::app::path)" \
    CTX_APP="$(docker::app::path)" \
    CTX_APACHE_LOGS="$(docker::apache::logs_path)" \
    CTX_APACHE_VHOSTS="$(docker::apache::vhosts_path)" \
    CTX_APACHE_CERTS="$(docker::apache::certs_path)" \
    CTX_XDEBUG="$(docker::apache::xdebug_path)" \
    APP_PATH="$(ctx::container::root)" \
    IMAGE_PATH="$(docker::image::path)" \
    TRAEFIK_LABELS="$(docker::proxy::traefik_labels "$PROJECT_NAME" "$DOMAIN" "$BACKEND_DOMAIN" 80)" \
    DB_ENVIRONMENT="$(docker::db::environment)" \
    DB_VOLUMES="$(docker::compose::volume "$(docker::db::external_path)" "$(docker::db::internal_path)")" \
    DB_STACK_PORT="$(docker::db::external_port):$(docker::db::internal_port)"
}

# ===========================================
# Build
# ===========================================
function docker::image::build() {
  local dockerfile
  dockerfile="$(path::relative_to_root "$(docker::image::path)")"

  local tag="${APP_IMAGE}:${ENVIRONMENT}"

  require_file "$dockerfile" || {
    log::docker_error "Dockerfile not found for environment $ENVIRONMENT"
    return 1
  }

  log::docker_build "Building image ${tag}..."

  local context
  context="$(platform::docker_path "$(ctx::root)")"

  if docker::raw build -f "$dockerfile" -t "$tag" "$context"; then
    log::docker_success "Image built: ${tag}"
  else
    return 1
  fi
}
function docker::compose::build() {
  docker::compose build
}