#pragma once

#ifdef __cplusplus
extern "C" {
#endif

#include <stddef.h>
#include <stdint.h>

#include "session/export.h"
#include "session/network/session_network_types.h"
#include "session/platform.h"

typedef struct open_group_server_parsed_download_url {
    char base_url[268];  // null-terminated (max length 267), normalized (i.e. always lower-case,
                         // only has port if non-default, has trailing / removed)
    char room[65];       // null-terminated (max length 64), normalized (always lower-case)
    char file_id[45];    // 44 character id (when a string) + null terminator
    bool wants_stream_decryption;
} open_group_server_parsed_download_url;

/// API: session_open_group_server/session_open_group_server_parse_download_url
///
/// Parses a url to extract the information required to download the file.
///
/// Inputs:
/// - `url` -- [in] url to check.
/// - `out` -- [out] parsed download url.
///
/// Outputs:
/// - returns true if url was successfully parsed, false otherwise.
LIBSESSION_EXPORT bool session_open_group_server_parse_download_url(
        const char* url, open_group_server_parsed_download_url* out);

/// API: session_open_group_server/session_open_group_server_generate_download_url
///
/// Determines whether a given download url requires deterministic decryption.
///
/// Inputs:
/// - `file_id` -- [in] id for the file generated by uploading to the file server.
/// - `base_url` -- [in] the base url for the target open group server.
/// - `room` -- [in] the target room for the open group server.
/// - `pubkey_hex` -- [in] the pubkey for the target open group server (in hex).
/// - `use_stream_encryption` -- [in] flag indicating whether the file should use stream encryption.
/// - `out_url` -- [out] generated download url.
/// - `out_url_len` -- [in] size of the url buffer provided.
///
/// Outputs:
/// - returns true if url was successfully generated and copied into the buffer, false if otherwise
/// (including if the buffer was too small).
LIBSESSION_EXPORT bool session_open_group_server_generate_download_url(
        const char* file_id,
        const char* base_url,
        const char* room,
        const char* pubkey_hex,
        bool use_stream_encryption,
        char* out_url,
        size_t out_url_len);

#ifdef __cplusplus
}
#endif
