#!/bin/bash

# Test utilities for DataBuild end-to-end tests

set -euo pipefail

# Logging functions (no colors for simplicity)
log_info() {
    printf "[INFO] %s\n" "$1"
}

log_warn() {
    printf "[WARN] %s\n" "$1"
}

log_error() {
    printf "[ERROR] %s\n" "$1"
}

# Test result functions
test_pass() {
    log_info "TEST PASSED: $1"
}

test_fail() {
    log_error "TEST FAILED: $1"
    exit 1
}

# Create test directory with cleanup
create_test_dir() {
    local test_dir="$1"
    mkdir -p "$test_dir"
    trap "cleanup_test_dir '$test_dir'" EXIT
    echo "$test_dir"
}

cleanup_test_dir() {
    local test_dir="$1"
    if [[ -d "$test_dir" ]]; then
        rm -rf "$test_dir"
    fi
}

# Wait for a service to be ready
wait_for_service() {
    local url="$1"
    local timeout="${2:-30}"
    local count=0
    
    while ! curl -sf "$url" > /dev/null 2>&1; do
        if [[ $count -ge $timeout ]]; then
            log_error "Service at $url did not become ready within $timeout seconds"
            return 1
        fi
        sleep 1
        ((count++))
    done
    
    log_info "Service at $url is ready" >&2
}

# Kill process and wait for it to exit
kill_and_wait() {
    local pid="$1"
    local timeout="${2:-10}"
    
    if kill -0 "$pid" 2>/dev/null; then
        kill "$pid" 2>/dev/null || true
        
        local count=0
        while kill -0 "$pid" 2>/dev/null; do
            if [[ $count -ge $timeout ]]; then
                log_warn "Process $pid did not exit gracefully, sending SIGKILL"
                kill -9 "$pid" 2>/dev/null || true
                break
            fi
            sleep 1
            ((count++))
        done
    fi
}

# Find available port
find_available_port() {
    local port
    port=$(python3 -c "
import socket
sock = socket.socket()
sock.bind(('', 0))
port = sock.getsockname()[1]
sock.close()
print(port)
")
    echo "$port"
}

# Compare two files ignoring timestamps and random values
compare_files_flexible() {
    local file1="$1"
    local file2="$2"
    
    # Create temporary files with normalized content
    local temp1=$(mktemp)
    local temp2=$(mktemp)
    
    # Remove timestamps and normalize random values
    sed -E 's/[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}[.0-9]*Z?/TIMESTAMP/g' "$file1" > "$temp1"
    sed -E 's/[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}[.0-9]*Z?/TIMESTAMP/g' "$file2" > "$temp2"
    
    # Compare normalized files
    local result=0
    if ! diff -q "$temp1" "$temp2" > /dev/null 2>&1; then
        result=1
    fi
    
    # Cleanup
    rm -f "$temp1" "$temp2"
    
    return $result
}

# HTTP request helper
http_request() {
    local method="$1"
    local url="$2"
    local data="${3:-}"
    
    if [[ -n "$data" ]]; then
        curl -s -X "$method" \
             -H "Content-Type: application/json" \
             -d "$data" \
             "$url"
    else
        curl -s -X "$method" "$url"
    fi
}

# Run command with timeout
run_with_timeout() {
    local timeout_secs="$1"
    shift
    
    # Check if timeout command is available
    if command -v timeout > /dev/null 2>&1; then
        timeout "$timeout_secs" "$@"
    else
        # Fallback: just run the command without timeout on macOS
        "$@"
    fi
}

# Check if file exists and is not empty
check_file_exists() {
    local file="$1"
    if [[ ! -f "$file" ]]; then
        log_error "File does not exist: $file"
        return 1
    fi
    if [[ ! -s "$file" ]]; then
        log_error "File is empty: $file"
        return 1
    fi
    return 0
}

# Setup test environment
setup_test_env() {
    local test_name="$1"
    local test_dir="/tmp/databuild_test_${test_name}_$$"
    
    # Create test directory
    mkdir -p "$test_dir"
    
    # Set environment variables
    export DATABUILD_TEST_DIR="$test_dir"
    export DATABUILD_TEST_NAME="$test_name"
    
    log_info "Test environment setup: $test_dir" >&2
    echo "$test_dir"
}

# Assert that two values are equal
assert_equal() {
    local expected="$1"
    local actual="$2"
    local message="${3:-Values are not equal}"
    
    if [[ "$expected" != "$actual" ]]; then
        log_error "$message: expected '$expected', got '$actual'"
        return 1
    fi
}

# Assert that value is not empty
assert_not_empty() {
    local value="$1"
    local message="${2:-Value is empty}"
    
    if [[ -z "$value" ]]; then
        log_error "$message"
        return 1
    fi
}

# Extract JSON value using jq
extract_json_value() {
    local json="$1"
    local path="$2"
    
    echo "$json" | jq -r "$path"
}

# Count lines in file
count_lines() {
    local file="$1"
    wc -l < "$file" | tr -d ' '
}

# Check if all processes in list are running
check_processes_running() {
    local pids="$@"
    for pid in $pids; do
        if ! kill -0 "$pid" 2>/dev/null; then
            log_error "Process $pid is not running"
            return 1
        fi
    done
    return 0
}