#ifndef CARLA_H
#define CARLA_H

#include <stdint.h>
#include <stdbool.h>
#include <jack/jack.h>

// Carla plugin types we support
typedef enum {
    PLUGIN_TYPE_NONE,
    PLUGIN_TYPE_LV2,
    PLUGIN_TYPE_VST2,
    PLUGIN_TYPE_VST3,
    PLUGIN_TYPE_CLAP,
    PLUGIN_TYPE_INTERNAL  // Our built-in plugins (gain, etc.)
} PluginType;

// Plugin descriptor
typedef struct {
    char name[256];
    char uri[512];
    PluginType type;
    int carla_plugin_id;  // Carla's internal plugin ID
    int num_parameters;
    float *parameters;    // Current parameter values
    char **parameter_names;
} PluginInfo;

// Rack for a single channel
typedef struct {
    int num_plugins;
    PluginInfo plugins[16];  // Max 16 plugins per channel
    float volume;            // Channel volume (0.0 - 2.0)
    bool bypassed;
} ChannelRack;

// Carla host state
typedef struct {
    bool initialized;
    ChannelRack channel_racks[8];  // One rack per channel (MAX_CHANNELS)
    jack_client_t *client;
    // For plugin scanning
    char **available_plugins;
    int num_available_plugins;
} CarlaHost;

// Initialize Carla host
int carla_init(CarlaHost *host, jack_client_t *client);

// Cleanup Carla host
void carla_cleanup(CarlaHost *host);

// Add a plugin to a channel's rack
int carla_add_plugin(CarlaHost *host, int channel, const char *uri, PluginType type);

// Remove a plugin from a channel's rack
int carla_remove_plugin(CarlaHost *host, int channel, int plugin_index);

// Set plugin parameter
int carla_set_parameter(CarlaHost *host, int channel, int plugin_index, int param_index, float value);

// Get plugin parameter
float carla_get_parameter(CarlaHost *host, int channel, int plugin_index, int param_index);

// Set channel volume
void carla_set_channel_volume(CarlaHost *host, int channel, float volume);

// Get channel volume
float carla_get_channel_volume(CarlaHost *host, int channel);

// Process audio through the rack (called from audio thread)
void carla_process(CarlaHost *host, int channel, float *in_buffer, float *out_buffer, jack_nframes_t nframes);

// Scan for available plugins
int carla_scan_plugins(CarlaHost *host);

// Get available plugin names for fuzzy search
const char** carla_get_available_plugins(CarlaHost *host, int *count);

// Get plugin display name
const char* carla_get_plugin_name(CarlaHost *host, int channel, int plugin_index);

#endif // CARLA_H