[CCode (cheader_filename = "microhttpd.h")]
namespace MHD {
    [CCode (cname = "enum MHD_ValueKind", cprefix = "MHD_")]
    public enum ValueKind {
        RESPONSE_HEADER_KIND,
        HEADER_KIND,
        COOKIE_KIND,
        POSTDATA_KIND,
        GET_ARGUMENT_KIND,
        FOOTER_KIND
    }

    [CCode (cname = "enum MHD_RequestTerminationCode", cprefix = "MHD_REQUEST_TERMINATED_")]
    public enum RequestTerminationCode {
        COMPLETED_OK,
        WITH_ERROR,
        TIMEOUT_REACHED,
        DAEMON_SHUTDOWN,
        READ_ERROR,
        CLIENT_ABORT
    }

    [CCode (cname = "enum MHD_ResponseMemoryMode", cprefix = "MHD_")]
    public enum ResponseMemoryMode {
        RESPMEM_PERSISTENT,
        RESPMEM_MUST_FREE,
        RESPMEM_MUST_COPY
    }

    [CCode (cname = "MHD_USE_SELECT_INTERNALLY")]
    public const uint USE_SELECT_INTERNALLY;
    [CCode (cname = "MHD_USE_THREAD_PER_CONNECTION")]
    public const uint USE_THREAD_PER_CONNECTION;
    [CCode (cname = "MHD_USE_DEBUG")]
    public const uint USE_DEBUG;
    [CCode (cname = "MHD_ALLOW_SUSPEND_RESUME")]
    public const uint ALLOW_SUSPEND_RESUME;

    [CCode (cname = "MHD_OPTION_END")]
    public const int OPTION_END;

    [SimpleType]
    [CCode (cname = "struct MHD_Connection*")]
    public struct Connection {}

    [CCode (cname = "int", cprefix = "MHD_")]
    public enum Result {
        YES = 1,
        NO = 0
    }

    [Compact]
    [CCode (cname = "struct MHD_Response", free_function = "MHD_destroy_response")]
    public class Response {
        [CCode (cname = "MHD_create_response_from_buffer")]
        public Response.from_buffer (size_t size, [CCode(array_length=false)] uint8[] buffer, ResponseMemoryMode mode);
        
        [CCode (cname = "MHD_add_response_header")]
        public int add_header (string header, string content);
    }

    [Compact]
    [CCode (cname = "struct MHD_Daemon", free_function = "MHD_stop_daemon")]
    public class Daemon {
        [CCode (cname = "MHD_start_daemon")]
        public static Daemon start (uint flags, uint16 port, 
            AcceptPolicyCallback? apc, 
            AccessHandlerCallback dh, 
            ...);
    }

    [CCode (instance_pos = 0)]
    public delegate int AcceptPolicyCallback (void* cls, void* addr, uint addrlen);

    [CCode (instance_pos = 0)]
    public delegate int AccessHandlerCallback (Connection connection, 
        string? url, string? method, string? version, 
        string? upload_data, [CCode(array_length=false)] size_t* upload_data_size, 
        void** con_cls);
    
    [CCode (cname = "MHD_queue_response")]
    public int queue_response (Connection connection, uint status_code, Response response);

    [CCode (cname = "MHD_suspend_connection")]
    public int suspend_connection (Connection connection);

    [CCode (cname = "MHD_resume_connection")]
    public int resume_connection (Connection connection);

    [CCode (cname = "MHD_lookup_connection_value")]
    public unowned string? lookup_connection_value (Connection connection, ValueKind kind, string key);
}