#include <stdio.h>
#include <string.h>
#include <ecdaa-tpm.h>
#include "client.h"

#define ISSUERIP "127.0.0.1"
#define ISSUERPORT 6590
#define MEMBERIP "127.0.0.1"
#define MEMBERPORT 6591
#define VERIFIERIP "127.0.0.1"
#define VERIFIERPORT 6592


typedef struct member {
    struct ecdaa_member_public_key_FP256BN mpk;
} member_t;

typedef enum memberstate {
    ON,
    JOIN,
    APPEND,
    JOINED,
    ATTEST,
    PUBLISH
}memberstate_t;

int process_member_client(int connfd);

int main() {
    int err = 0;
    client_t *client;

    client = client_open(&process_member_client);
    if (NULL == client) {
        printf("listen failed, closing...\n");
    }

    for (; !err;) {
        err = client_connect(client, ISSUERPORT, ISSUERIP);
        if (1 == err) {
            printf("graceful shutdown...\n");
        } else if (err) {
            printf("accept failed, closing...\n");
        }
    }
    printf("shut down client\n");
    client_close(client);
    return 0;
}

int process_member_client(int connfd) {
    char inbuf[MAX_BUFSIZE];
    char outbuf[MAX_BUFSIZE];
    int n = 0;
    memberstate_t state = JOIN;

    strncpy(outbuf, "JOIN", 4);
    printf("< MEMBER: %s\n", outbuf);
    write(connfd, outbuf, sizeof(outbuf));
    for (;;) {
        bzero(inbuf, MAX_BUFSIZE);
        bzero(outbuf, MAX_BUFSIZE);

        if (0 >= read(connfd, inbuf, sizeof(inbuf))) {
            printf("process_issuer: cannot read from socket\n");
            return -1;
        }

        switch(state) {
            case JOIN:
                state = APPEND;
                break;
            case APPEND:
                state = JOINED;
                break;
            case JOINED:
                state = ATTEST;
                state = PUBLISH;
                break;
            case ATTEST:
                state = JOINED;
                break;
            case PUBLISH:
                break;
        }

        printf("> MEMBER: %s\n", inbuf);
        strncpy(outbuf, "OK", 2);
        printf("< MEMBER: %s\n", outbuf);
        write(connfd, outbuf, sizeof(outbuf));
        if (0 == strncmp("exit", inbuf, 4)) {
            printf("process_issuer: exiting gracefully\n");
            return 0;
        }
        if (0 == strncmp("shutdown", inbuf, 8)) {
            printf("process_issuer: shutting down gracefully\n");
            return 1;
        }
    }
}