"""PHP code generator."""

import json
from curlconverter.parser import ParsedCurl
from curlconverter.generators import register_generator


def _detect_content_type(headers: dict, data: str) -> str:
    """Detect content type from headers or data."""
    if "Content-Type" in headers:
        return headers["Content-Type"]
    if "content-type" in headers:
        return headers["content-type"]
    if data:
        try:
            json.loads(data)
            return "application/json"
        except (json.JSONDecodeError, TypeError):
            pass
    return "application/x-www-form-urlencoded"


@register_generator("php")
def generate_php(parsed: ParsedCurl) -> str:
    """Generate PHP cURL code from parsed curl data."""
    lines = []
    lines.append("<?php")
    lines.append("")
    lines.append("$url = " + repr(parsed.url) + ";")
    lines.append("")
    
    lines.append("$ch = curl_init();")
    lines.append("")
    
    lines.append(f'curl_setopt($ch, CURLOPT_URL, $url);')
    lines.append(f'curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);')
    lines.append(f'curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "{parsed.method}");')
    lines.append("")
    
    headers = dict(parsed.headers) if parsed.headers else {}
    
    if parsed.user_agent and "User-Agent" not in headers and "user-agent" not in headers:
        headers["User-Agent"] = parsed.user_agent
    
    if parsed.data:
        content_type = _detect_content_type(headers, parsed.data)
        
        if content_type == "application/json":
            try:
                json_data = json.loads(parsed.data)
                lines.append("$data = " + json.dumps(json_data) + ";")
                lines.append("curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));")
            except (json.JSONDecodeError, TypeError):
                lines.append("$data = " + repr(parsed.data) + ";")
                lines.append("curl_setopt($ch, CURLOPT_POSTFIELDS, $data);")
        else:
            lines.append("$data = " + repr(parsed.data) + ";")
            lines.append("curl_setopt($ch, CURLOPT_POSTFIELDS, $data);")
        
        if "Content-Type" not in headers and "content-type" not in headers:
            headers["Content-Type"] = content_type
        
        lines.append("")
    
    if headers:
        curl_headers = []
        for k, v in headers.items():
            curl_headers.append(f"{k}: {v}")
        lines.append("$headers = " + repr(curl_headers) + ";")
        lines.append("curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);")
        lines.append("")
    
    if parsed.auth:
        lines.append(f'curl_setopt($ch, CURLOPT_USERPWD, "{parsed.auth[0]}:{parsed.auth[1]}");')
        lines.append("")
    
    if parsed.cookies:
        lines.append(f'curl_setopt($ch, CURLOPT_COOKIE, "{parsed.cookies}");')
        lines.append("")
    
    lines.append("$response = curl_exec($ch);")
    lines.append("")
    lines.append("if (curl_errno($ch)) {")
    lines.append('    echo "Error: " . curl_error($ch);')
    lines.append("}")
    lines.append("")
    lines.append("curl_close($ch);")
    lines.append("")
    lines.append("echo $response;")
    
    return "\n".join(lines)


import curlconverter.generators.python
import curlconverter.generators.javascript
import curlconverter.generators.go
import curlconverter.generators.ruby
import curlconverter.generators.php