#ifndef __SCC_OPTPARSER_H__
#define __SCC_OPTPARSER_H__

typedef struct scc_optparse_opt {
    char prefix;
    char short_name;
    const char *long_name;
    const char *default_value;
    void (*invoke)(void *value);
    int min_args;
    int max_args;
} scc_optparse_opt_t;

#define SCC_OPTPARSE_OPT(prefix, short_name, long_name, min_args, max_args,    \
                         default_value, invoke)                                \
    {prefix, short_name, long_name, default_value, invoke, min_args, max_args}
#define SCC_OPTPARSE_OPT_END() {0}

typedef enum scc_optparse_error {
    SCC_OPT_ERROR_NONE,
    SCC_OPT_ERROR_NOT_FOUND_LONG_ARG,
    SCC_OPT_ERROR_NOT_FOUND_SHORT_ARG,
    SCC_OPT_ERROR_NOT_ENOUGH_ARGS,
    SCC_OPT_ERROR_TOO_MANY_ARGS,
} scc_optparse_error_t;

typedef struct scc_optparse_result {
    const scc_optparse_opt_t *opt;
    const char *value;
    int error;
} scc_optparse_result_t;

typedef struct {
    int argc;
    const char **argv;
    const scc_optparse_opt_t *opts;
    int handle_positional;
    int greedy_mode;
    struct {
        const scc_optparse_opt_t *opt;
        int count;   // check for min_args <= count <= max_args
        int arg_pos; // for argv pos
        int opt_pos; // for short pos
    } current;
} scc_optparse_t;

void scc_optparse_init(scc_optparse_t *parser, int argc, const char **argv);
void scc_optparse_drop(scc_optparse_t *parser);
void scc_optparse_set(scc_optparse_t *parser, const scc_optparse_opt_t *opts);
void scc_optparse_reset(scc_optparse_t *parser);
int scc_optparse_parse(scc_optparse_t *parser, scc_optparse_result_t *res);

#endif /* __SCC_OPTPARSER_H__ */