"""Service-specific monitoring agents."""

from langgraph.prebuilt import create_react_agent
from custom_tools import get_shell_tool, LogTailTool


def create_mariadb_worker():
    """Create MariaDB analysis agent."""
    return create_react_agent(
        model="openai:gpt-4o-mini",
        tools=[get_shell_tool(), LogTailTool()],
        prompt="""
You are a MariaDB database expert specializing in configuration and log analysis.

TASK: Analyze MariaDB configuration, status, and logs.

STANDARD COMMANDS:
- `systemctl status mariadb` or `systemctl status mysql` - Service status
- `mysqladmin status` - Basic status (if accessible)
- `mysqladmin variables | grep -E "(max_connections|innodb_buffer)"` - Key variables
- Check config files: `ls -la /etc/mysql/` and `cat /etc/mysql/my.cnf`

LOG ANALYSIS (use tail_log tool):
- `/var/log/mysql/error.log` - Error log
- `/var/log/mysql/mysql.log` - General log
- `/var/log/mariadb/mariadb.log` - MariaDB log

IMPORTANT: After analysis, provide comprehensive summary including:
1. MariaDB service status and version
2. Configuration assessment (memory, connections)
3. Recent errors from logs
4. Performance indicators
5. Security configuration review
6. Issues found and recommendations

Focus on problems that could affect application connectivity or performance. Always provide your MariaDB analysis summary before completing your task.
""",
        name="mariadb_analyzer"
    )


def create_nginx_worker():
    """Create Nginx analysis agent."""
    return create_react_agent(
        model="openai:gpt-4o-mini",
        tools=[get_shell_tool(), LogTailTool()],
        prompt="""
You are an Nginx web server expert specializing in configuration and troubleshooting.

TASK: Analyze Nginx configuration, status, and logs for issues.

STANDARD COMMANDS:
- `systemctl status nginx` - Service status
- `nginx -t` - Configuration validation
- `nginx -V` - Version and compile options
- `ps aux | grep nginx` - Process information
- Check config: `ls -la /etc/nginx/` and examine `/etc/nginx/nginx.conf`

LOG ANALYSIS (use tail_log tool):
- `/var/log/nginx/error.log` - Error log
- `/var/log/nginx/access.log` - Access log (recent entries)

IMPORTANT: After analysis, provide comprehensive summary including:
1. Nginx service status and version
2. Configuration validation results
3. Worker processes and resource usage
4. Recent errors from error log
5. Access patterns and status codes from access log
6. Configuration issues and recommendations

For 502/503/504 errors, specifically check:
- Upstream server connections
- PHP-FPM socket connectivity
- Resource limits and timeouts

Always provide your Nginx analysis summary before completing your task.
""",
        name="nginx_analyzer"
    )


def create_phpfpm_worker():
    """Create PHP-FPM analysis agent."""
    return create_react_agent(
        model="openai:gpt-4o-mini",
        tools=[get_shell_tool(), LogTailTool()],
        prompt="""
You are a PHP-FPM expert specializing in performance analysis and troubleshooting.

TASK: Analyze PHP-FPM configuration, status, and performance issues.

STANDARD COMMANDS:
- `systemctl status php*-fpm` - Service status (multiple versions)
- `ps aux | grep php-fpm` - Process information
- Check pools: `ls /etc/php/*/fpm/pool.d/` or similar
- `find /var/log -name "*php*" -type f` - Find PHP logs

CONFIGURATION ANALYSIS:
- Examine PHP-FPM pool configuration files
- Check memory limits: `php -i | grep memory_limit`
- Check max execution time: `php -i | grep max_execution_time`

LOG ANALYSIS (use tail_log tool):
- PHP-FPM error logs
- Slow log if enabled
- System logs for PHP-FPM entries

IMPORTANT: After analysis, provide comprehensive summary including:
1. PHP-FPM service status and version
2. Active pools and worker processes
3. Memory usage and limits
4. Recent errors and warnings
5. Performance issues (timeouts, memory exhaustion)
6. Pool configuration recommendations

For 502 errors, specifically check:
- Socket permissions and connectivity
- Worker process limits
- Memory exhaustion issues
- Timeout configurations

Always provide your PHP-FPM analysis summary before completing your task.
""",
        name="phpfpm_analyzer"
    )