#!/usr/bin/env bash

set -euo pipefail

SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
KNOE_HOME=$(cd "$SCRIPT_DIR/../.." && pwd)

TMP_DIR=$(mktemp -d)
trap 'rm -rf "$TMP_DIR"' EXIT
export TMP_DIR

BIN_DIR="$TMP_DIR/bin"
mkdir -p "$BIN_DIR"

cat <<'K_EOF' >"$BIN_DIR/kubectl"
#!/usr/bin/env bash
set -euo pipefail

args="$*"

if [[ "$args" == "config current-context"* ]]; then
  echo "k3d-knoe-dev-cluster"
  exit 0
fi

if [[ "$args" == "config get-contexts -o name"* ]]; then
  echo "docker-desktop"
  echo "k3d-knoe-dev-cluster"
  echo "k3d-knoe-system"
  exit 0
fi

if [[ "$args" == "config get-contexts --no-headers"* ]]; then
  # Format: CURRENT NAME CLUSTER AUTHINFO NAMESPACE
  echo "*  k3d-knoe-dev-cluster   k3d-knoe-dev-cluster   user  "
  echo "   k3d-knoe-system        k3d-knoe-system        user  "
  exit 0
fi

if [[ "$args" == "config use-context "* ]]; then
  # shellcheck disable=SC2129
  echo "${args#config use-context }" >"${TMP_DIR}/used_context"
  exit 0
fi

exit 0
K_EOF
chmod +x "$BIN_DIR/kubectl"

mkdir -p "$TMP_DIR/conf"
cat <<C_EOF >"$TMP_DIR/conf/knoe.cfg"
[Global]
DEPLOYMENT_MODE = k3d
KUBECONTEXT = knoe-system
C_EOF

export PATH="$BIN_DIR:$PATH"
export HOME="$TMP_DIR/home"
mkdir -p "$HOME"

export KNOE_HOME="$KNOE_HOME"
export KNOE_CONF="$TMP_DIR/conf"
export KNOE_MODE="k3d"
export KUBECONTEXT="knoe-system"

# shellcheck disable=SC1090
source "$KNOE_HOME/etc/knoe_cfg.sh"

ensure_kube_context

if [[ "$(cat "$TMP_DIR/used_context")" != "k3d-knoe-system" ]]; then
  echo "FAILURE: expected context 'k3d-knoe-system' but got '$(cat "$TMP_DIR/used_context")'" >&2
  exit 1
fi

echo "SUCCESS"