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#include "drafts.h"
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>
#include "util.h"
#include "yyjson.h"
static void mkdirs_for(const char *path)
{
char tmp[640];
if (snprintf(tmp, sizeof tmp, "%s", path) >= (int)sizeof tmp)
return;
for (char *p = tmp + 1; *p; p++) {
if (*p != '/')
continue;
*p = '\0';
mkdir(tmp, 0700);
*p = '/';
}
}
static void cache_path(char *buf, size_t n)
{
const char *cache = getenv("XDG_CACHE_HOME");
if (cache && *cache) {
snprintf(buf, n, "%s/bokf/drafts.json", cache);
return;
}
const char *home = getenv("HOME");
snprintf(buf, n, "%s/.cache/bokf/drafts.json",
home && *home ? home : ".");
}
static void rec_clear(struct draft *r)
{
free(r->entity);
free(r->id);
free(r->fields);
}
void drafts_free(struct drafts *d)
{
if (!d)
return;
for (size_t i = 0; i < d->n; i++)
rec_clear(&d->v[i]);
free(d->v);
d->v = NULL;
d->n = d->cap = 0;
}
static struct draft *rec_find(const struct drafts *d, int64_t org,
const char *entity, const char *id)
{
for (size_t i = 0; i < d->n; i++) {
struct draft *r = &d->v[i];
if (r->org == org && strcmp(r->entity, entity) == 0 &&
strcmp(r->id, id) == 0)
return r;
}
return NULL;
}
static void rec_put(struct drafts *d, int64_t org, const char *entity,
const char *id, const char *fields)
{
struct draft *r = rec_find(d, org, entity, id);
if (!r) {
if (d->n == d->cap) {
d->cap = d->cap ? d->cap * 2 : 8;
d->v = xrealloc(d->v, d->cap * sizeof *d->v);
}
r = &d->v[d->n++];
memset(r, 0, sizeof *r);
r->org = org;
r->entity = xstrdup(entity);
r->id = xstrdup(id);
r->fields = xstrdup(fields && *fields ? fields : "{}");
return;
}
free(r->fields);
r->fields = xstrdup(fields && *fields ? fields : "{}");
}
static void drafts_write(const struct drafts *d)
{
yyjson_mut_doc *doc = yyjson_mut_doc_new(NULL);
yyjson_mut_val *root = yyjson_mut_obj(doc);
yyjson_mut_doc_set_root(doc, root);
yyjson_mut_obj_add_int(doc, root, "version", 1);
yyjson_mut_val *arr = yyjson_mut_arr(doc);
for (size_t i = 0; i < d->n; i++) {
const struct draft *r = &d->v[i];
yyjson_mut_val *o = yyjson_mut_arr_add_obj(doc, arr);
yyjson_mut_obj_add_int(doc, o, "org", r->org);
yyjson_mut_obj_add_strcpy(doc, o, "entity", r->entity);
yyjson_mut_obj_add_strcpy(doc, o, "id", r->id);
yyjson_mut_val *f = yyjson_mut_rawcpy(doc, r->fields);
yyjson_mut_obj_add_val(doc, o, "fields", f ? f : yyjson_mut_obj(doc));
}
yyjson_mut_obj_add_val(doc, root, "drafts", arr);
char *json = yyjson_mut_write(doc, YYJSON_WRITE_PRETTY, NULL);
yyjson_mut_doc_free(doc);
if (!json)
return;
mkdirs_for(d->path);
char tmp[640];
if (snprintf(tmp, sizeof tmp, "%s.tmp", d->path) >= (int)sizeof tmp) {
free(json);
return;
}
int fd = open(tmp, O_WRONLY | O_CREAT | O_TRUNC, 0600);
if (fd >= 0) {
FILE *f = fdopen(fd, "w");
if (f) {
fputs(json, f);
fclose(f);
rename(tmp, d->path);
} else {
close(fd);
}
}
free(json);
}
static void drafts_load(struct drafts *d)
{
FILE *f = fopen(d->path, "rb");
if (!f)
return;
struct buf b;
char tmp[8192];
size_t k;
buf_init(&b);
while ((k = fread(tmp, 1, sizeof tmp, f)) > 0)
buf_append(&b, tmp, k);
fclose(f);
yyjson_doc *doc = yyjson_read((const char *)b.p, b.len, 0);
buf_free(&b);
if (!doc)
return;
yyjson_val *arr = yyjson_obj_get(yyjson_doc_get_root(doc), "drafts");
if (yyjson_is_arr(arr)) {
size_t idx, max;
yyjson_val *it;
yyjson_arr_foreach(arr, idx, max, it) {
yyjson_val *org = yyjson_obj_get(it, "org");
yyjson_val *entity = yyjson_obj_get(it, "entity");
yyjson_val *id = yyjson_obj_get(it, "id");
yyjson_val *fields = yyjson_obj_get(it, "fields");
if (!yyjson_is_int(org) || !yyjson_is_str(entity) ||
!yyjson_is_str(id) || !yyjson_is_obj(fields))
continue;
char *ft = yyjson_val_write(fields, 0, NULL);
rec_put(d, yyjson_get_sint(org), yyjson_get_str(entity),
yyjson_get_str(id), ft ? ft : "{}");
free(ft);
}
}
yyjson_doc_free(doc);
}
void drafts_init_path(struct drafts *d, const char *path)
{
memset(d, 0, sizeof *d);
snprintf(d->path, sizeof d->path, "%s", path);
drafts_load(d);
}
void drafts_init(struct drafts *d)
{
char path[600];
cache_path(path, sizeof path);
drafts_init_path(d, path);
}
const char *drafts_get(const struct drafts *d, int64_t org,
const char *entity, const char *id)
{
const struct draft *r = rec_find(d, org, entity, id);
return r ? r->fields : NULL;
}
int drafts_have(const struct drafts *d, int64_t org, const char *entity,
const char *id)
{
return rec_find(d, org, entity, id) != NULL;
}
void drafts_put(struct drafts *d, int64_t org, const char *entity,
const char *id, const char *fields)
{
rec_put(d, org, entity, id, fields);
drafts_write(d);
}
void drafts_del(struct drafts *d, int64_t org, const char *entity,
const char *id)
{
struct draft *r = rec_find(d, org, entity, id);
if (!r)
return;
size_t i = (size_t)(r - d->v);
rec_clear(r);
memmove(&d->v[i], &d->v[i + 1], (d->n - i - 1) * sizeof *d->v);
d->n--;
drafts_write(d);
}
size_t drafts_count(const struct drafts *d, int64_t org, const char *entity)
{
size_t n = 0;
for (size_t i = 0; i < d->n; i++)
if (d->v[i].org == org && strcmp(d->v[i].entity, entity) == 0)
n++;
return n;
}
void drafts_foreach(const struct drafts *d, int64_t org, const char *entity,
void (*cb)(void *ud, const char *id, const char *fields),
void *ud)
{
for (size_t i = 0; i < d->n; i++)
if (d->v[i].org == org && strcmp(d->v[i].entity, entity) == 0)
cb(ud, d->v[i].id, d->v[i].fields);
}
char *drafts_new_id(void)
{
static unsigned seq;
char buf[64];
snprintf(buf, sizeof buf, "ny-%lld-%u", (long long)time(NULL), ++seq);
return xstrdup(buf);
}
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