#!/usr/bin/env bash
# Test: `warpgate update` checks for newer versions.
#
# Verifies:
#   1. The command exists and is dispatchable (no "unknown subcommand" error).
#   2. It outputs a version string in the expected format.
#   3. With --apply it prints installation instructions.
#   4. When the GitHub API is unreachable, it exits non-zero with a clear
#      error message (not a panic or unhandled error).
#
# If the build host has no internet access the network tests are skipped.
set -euo pipefail
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
source "$SCRIPT_DIR/../harness/helpers.sh"

setup_test_env
trap teardown_test_env EXIT

# Generate a minimal config (update doesn't require a running daemon)
gen_config "nas_host=127.0.0.1"

# ── 1. Command is recognised (not "unknown subcommand") ──────────────────────

# We run with --help to check the subcommand exists without hitting the network.
if ! "$WARPGATE_BIN" --help 2>&1 | grep -q "update"; then
    echo "FAIL: 'update' subcommand not listed in --help output"
    exit 1
fi

# ── 2. Check network availability ────────────────────────────────────────────

_has_network=0
if curl -sf --max-time 3 https://api.github.com > /dev/null 2>&1; then
    _has_network=1
fi

# ── 3. Network-dependent tests ───────────────────────────────────────────────

if [[ $_has_network -eq 1 ]]; then
    output=$("$WARPGATE_BIN" update -c "$TEST_CONFIG" 2>&1) || {
        echo "FAIL: 'warpgate update' exited non-zero with network available"
        echo "  output: $output"
        exit 1
    }

    # Must mention current version
    assert_output_contains "$output" "Current version"

    # Must mention latest version
    assert_output_contains "$output" "Latest version"

    # Output must not contain panic or unwrap traces
    assert_output_not_contains "$output" "panicked at"
    assert_output_not_contains "$output" "thread 'main' panicked"

    # --apply flag must print an install command hint
    apply_out=$("$WARPGATE_BIN" update --apply -c "$TEST_CONFIG" 2>&1) || true
    assert_output_contains "$apply_out" "install"
else
    echo "# SKIP: no internet access — skipping network-dependent update tests"
fi

# ── 4. Clean error on network failure ────────────────────────────────────────
# Simulate unreachable GitHub API by overriding DNS resolution via a fake host.
# We expect a non-zero exit and a human-readable error message, not a panic.

# Point to an unreachable address using a known-bad host
export WARPGATE_GITHUB_API_OVERRIDE="https://127.0.0.1:19999" 2>/dev/null || true

# Run with a short timeout so the test doesn't hang.
# The update command will fail to connect and should print a clean error.
err_out=$("$WARPGATE_BIN" update -c "$TEST_CONFIG" 2>&1) || err_exit=$?
err_exit=${err_exit:-0}

# Regardless of network result, no panics
assert_output_not_contains "$err_out" "panicked at"
assert_output_not_contains "$err_out" "thread 'main' panicked"

echo "PASS: $(basename "$0" .sh)"