#pragma once

#include <stdbool.h>
#include <stddef.h>
#include "esp_err.h"

#ifdef __cplusplus
extern "C" {
#endif

/* Forward declaration for esp_http_client_handle_t */
typedef struct esp_http_client* esp_http_client_handle_t;

/* Provider configuration structure */
typedef struct {
    const char *name;                    /* Provider name, e.g., "anthropic", "openai", "siliconflow", "volcengine" */
    const char *default_api_url;         /* Default API URL */
    const char *default_host;            /* Default hostname */
    const char *default_path;            /* Default API path */
    bool is_openai_compatible;           /* Whether this provider uses OpenAI-compatible API */
} llm_provider_config_t;

/* Provider registry - all supported providers */
extern const llm_provider_config_t llm_providers[];
extern const int llm_provider_count;

/* Find provider configuration by name */
const llm_provider_config_t *llm_provider_find(const char *name);

/* Get current provider configuration */
const llm_provider_config_t *llm_provider_current(void);

/* Set current provider by name */
void llm_provider_set_current(const char *name);

/* Get current provider name */
const char *llm_provider_current_name(void);

/* Check if current provider is OpenAI-compatible */
bool llm_provider_is_openai_compatible(void);

/* Get API URL for current provider (with dynamic Base URL support) */
const char *llm_provider_api_url(void);

/* Get hostname for current provider */
const char *llm_provider_host(void);

/* Get API path for current provider */
const char *llm_provider_path(void);

/* Provider-specific API key and Base URL management */
void llm_provider_set_api_key(const char *provider_name, const char *api_key);
void llm_provider_set_base_url(const char *provider_name, const char *base_url);
const char *llm_provider_get_api_key(const char *provider_name);
const char *llm_provider_get_base_url(const char *provider_name);

/* Initialize provider system (load from NVS) */
void llm_provider_init(void);

/* Save provider configuration to NVS */
void llm_provider_save_config(const char *provider_name);

/* Common authentication header setup for OpenAI-compatible providers */
void llm_provider_set_auth_headers(esp_http_client_handle_t client, const char *api_key);

#ifdef __cplusplus
}
#endif