/* test_mode_persist.c — 阅读模式 + 每册续读状态持久化宿主测试（无 SDK/硬件）。
 *
 * 覆盖：
 *   P1 模式值：valid/name/parse（paged/webtoon，非法值回退）；
 *   P2 册标识键：reader.page/mode.<FNV1a64(规范路径)>，末尾斜杠等价、不同册不同键、
 *      键字符集安全（[A-Za-z0-9._-]）；
 *   P3 默认值：无记录时 get_mode/get_page 返回调用方给的默认值；
 *   P4 读写往返 + 册间隔离 + 一次 save 写两键；
 *   P5 坏值/非法模式忽略（不覆盖已有记录）；写失败只 WARN 不崩；
 *   P6 书库角标：page>0 → "续读 Pn"；page==0/无记录 → 无角标。
 *
 * 编译（在 tuku/ 下）：
 *   gcc -Wall -Wextra -O1 -I. test/test_mode_persist.c logic/reader.c \
 *       test/settings_reader_stub.c -o test/test_mode_persist
 * 或 test/run_webtoon_tests.sh。
 */
#include "logic/reader.h"
#include "test/settings_reader_stub.h"
#include "include/meow_ui_config.h"

#include <ctype.h>
#include <stdio.h>
#include <string.h>

static int g_pass, g_fail;
#define CHECK(cond, ...) do { \
    if (cond) { g_pass++; } \
    else { g_fail++; printf("FAIL %s:%d  ", __FILE__, __LINE__); printf(__VA_ARGS__); printf("\n"); } \
} while (0)

static void test_mode_values(void)
{
    CHECK(mr_mode_valid(MR_MODE_PAGED) == 1, "paged valid");
    CHECK(mr_mode_valid(MR_MODE_WEBTOON) == 1, "webtoon valid");
    CHECK(mr_mode_valid(-1) == 0 && mr_mode_valid(2) == 0, "invalid modes");
    CHECK(strcmp(mr_mode_name(MR_MODE_PAGED), "paged") == 0, "name paged");
    CHECK(strcmp(mr_mode_name(MR_MODE_WEBTOON), "webtoon") == 0, "name webtoon");
    CHECK(strcmp(mr_mode_name(99), "paged") == 0, "name invalid -> paged");
    CHECK(mr_mode_parse("paged") == MR_MODE_PAGED, "parse paged");
    CHECK(mr_mode_parse("webtoon") == MR_MODE_WEBTOON, "parse webtoon");
    CHECK(mr_mode_parse("WEBTOON") == -1, "parse case sensitive");
    CHECK(mr_mode_parse("") == -1 && mr_mode_parse(NULL) == -1, "parse empty/NULL");
}

static void test_keys(void)
{
    char a[64], b[64], c[64];
    CHECK(mr_cont_key("/sd/book1", "page", a, (int)sizeof a) == 0, "key ok");
    CHECK(strncmp(a, "reader.page.", 12) == 0, "key prefix %s", a);
    CHECK(strlen(a) == 12 + 16, "key len=%zu", strlen(a));
    for (size_t i = 12; i < strlen(a); i++)
        CHECK(isxdigit((unsigned char)a[i]) != 0, "key hex char");
    CHECK(mr_cont_key("/sd/book1/", "page", b, (int)sizeof b) == 0, "key trailing slash");
    CHECK(strcmp(a, b) == 0, "trailing slash normalizes: %s vs %s", a, b);
    CHECK(mr_cont_key("/sd/book1", "mode", c, (int)sizeof c) == 0, "mode key");
    CHECK(strncmp(c, "reader.mode.", 12) == 0, "mode prefix %s", c);
    CHECK(strcmp(a, c) != 0, "field differs");
    CHECK(mr_cont_key("/sd/book2", "page", c, (int)sizeof c) == 0, "book2 key");
    CHECK(strcmp(a, c) != 0, "different books differ");

    /* 参数/缓冲边界 */
    CHECK(mr_cont_key(NULL, "page", a, (int)sizeof a) == -1, "NULL dir");
    CHECK(mr_cont_key("", "page", a, (int)sizeof a) == -1, "empty dir");
    CHECK(mr_cont_key("/a", NULL, a, (int)sizeof a) == -1, "NULL field");
    CHECK(mr_cont_key("/a", "page", NULL, 32) == -1, "NULL out");
    CHECK(mr_cont_key("/a", "page", a, 8) == -1 && a[0] == '\0', "small out");
}

static void test_defaults_and_roundtrip(void)
{
    mr_test_cfg_clear();
    CHECK(mr_cont_get_mode("/sd/a", MR_MODE_PAGED) == MR_MODE_PAGED, "default paged");
    CHECK(mr_cont_get_mode("/sd/a", MR_MODE_WEBTOON) == MR_MODE_WEBTOON, "default param used");
    CHECK(mr_cont_get_page("/sd/a", 0) == 0, "default page 0");
    CHECK(mr_cont_get_page("/sd/a", 7) == 7, "default page param");
    CHECK(mr_cont_badge("/sd/a", NULL, 0) == 0, "badge NULL safe");

    char badge[24];
    CHECK(mr_cont_badge("/sd/a", badge, (int)sizeof badge) == 0 && badge[0] == '\0',
          "no record -> no badge");

    mr_cont_set_mode("/sd/a", MR_MODE_WEBTOON);
    CHECK(mr_cont_get_mode("/sd/a", MR_MODE_PAGED) == MR_MODE_WEBTOON, "mode roundtrip");
    CHECK(mr_cont_get_mode("/sd/b", MR_MODE_PAGED) == MR_MODE_PAGED, "mode isolated per book");

    mr_cont_set_page("/sd/a", 17);
    CHECK(mr_cont_get_page("/sd/a", -1) == 17, "page roundtrip");
    CHECK(mr_cont_get_page("/sd/b", -1) == -1, "page isolated per book");
    CHECK(mr_cont_badge("/sd/a", badge, (int)sizeof badge) == 1, "badge shown");
    CHECK(strcmp(badge, "续读 P18") == 0, "badge text %s", badge);

    /* 一次 save 两键（模式 + 页码） */
    mr_cont_save("/sd/c", 3, MR_MODE_WEBTOON);
    CHECK(mr_cont_get_page("/sd/c", -1) == 3, "save page");
    CHECK(mr_cont_get_mode("/sd/c", MR_MODE_PAGED) == MR_MODE_WEBTOON, "save mode");
    CHECK(mr_cont_badge("/sd/c", badge, (int)sizeof badge) == 1 &&
          strcmp(badge, "续读 P4") == 0, "save badge %s", badge);

    /* page 0 视为「没有进度」，不出角标 */
    mr_cont_save("/sd/d", 0, MR_MODE_PAGED);
    CHECK(mr_cont_badge("/sd/d", badge, (int)sizeof badge) == 0 && badge[0] == '\0',
          "page 0 -> no badge");

    /* NULL/空路径安全 */
    mr_cont_set_page(NULL, 5);
    mr_cont_set_mode(NULL, MR_MODE_WEBTOON);
    mr_cont_save(NULL, 1, 1);
    mr_cont_save("", 1, 1);
    CHECK(mr_cont_get_page(NULL, 9) == 9 && mr_cont_get_mode(NULL, MR_MODE_PAGED) == MR_MODE_PAGED,
          "NULL dir safe");
}

static void test_bad_values(void)
{
    mr_test_cfg_clear();
    char key[64];
    char buf[24];

    /* 坏模式值 → 默认；坏页码（负数/非数字/超上限）→ 默认 */
    CHECK(mr_cont_key("/sd/x", "mode", key, (int)sizeof key) == 0, "bad key");
    mr_test_cfg_put(key, "vertical");
    CHECK(mr_cont_get_mode("/sd/x", MR_MODE_PAGED) == MR_MODE_PAGED, "bad mode -> def");

    CHECK(mr_cont_key("/sd/x", "page", key, (int)sizeof key) == 0, "bad page key");
    mr_test_cfg_put(key, "-3");
    CHECK(mr_cont_get_page("/sd/x", 11) == 11, "negative page -> def");
    mr_test_cfg_put(key, "abc");
    CHECK(mr_cont_get_page("/sd/x", 12) == 12, "non-numeric page -> def");
    mr_test_cfg_put(key, "99999999");
    CHECK(mr_cont_get_page("/sd/x", 13) == 13, "too-large page -> def");
    mr_test_cfg_put(key, "0");
    CHECK(mr_cont_get_page("/sd/x", 14) == 0, "zero page readable");

    /* 非法模式值不覆盖已有记录 */
    mr_cont_set_mode("/sd/y", MR_MODE_WEBTOON);
    mr_cont_set_mode("/sd/y", 42);
    CHECK(mr_cont_get_mode("/sd/y", MR_MODE_PAGED) == MR_MODE_WEBTOON, "invalid set ignored");

    /* 写失败：只告警，内存保持旧值；不崩 */
    mr_cont_save("/sd/z", 5, MR_MODE_PAGED);
    int warns = mr_test_log_warns();
    mr_test_cfg_fail_writes(1);
    mr_cont_set_page("/sd/z", 9);
    mr_cont_set_mode("/sd/z", MR_MODE_WEBTOON);
    mr_cont_save("/sd/z", 10, MR_MODE_WEBTOON);
    CHECK(mr_test_log_warns() > warns, "write failure warns (warns=%d)", mr_test_log_warns());
    CHECK(mr_cont_get_page("/sd/z", -1) == 5, "failed write keeps old page");
    CHECK(mr_cont_get_mode("/sd/z", MR_MODE_PAGED) == MR_MODE_PAGED, "failed write keeps old mode");
    mr_test_cfg_fail_writes(0);

    /* 写入后读回同一字符串（便于排查：paged/webtoon 明文） */
    CHECK(mr_cont_key("/sd/y", "mode", key, (int)sizeof key) == 0, "read mode key");
    CHECK(mr_test_cfg_get(key, buf, (int)sizeof buf) == 1 && strcmp(buf, "webtoon") == 0,
          "stored mode string %s", buf);
}

int main(void)
{
    test_mode_values();
    test_keys();
    test_defaults_and_roundtrip();
    test_bad_values();
    printf("%s: %d passed, %d failed\n", g_fail ? "FAIL" : "PASS", g_pass, g_fail);
    return g_fail ? 1 : 0;
}