Feature: ReDM update notifer (#128)

* Dockerfile: add `AmxxEasyHttp`

* add include: `easy_http.inc`

* rework `plugin_natives()` usage

* new ConVar: `redm_update_notify`

Notify for new ReDM update.

* new ConCmd: `redm_update_check`

Checks ReDM update.

* CI: add *amxx to releases artifacts

* update readme

.github/README.md

@@ -68,6 +68,7 @@ Many features have long been built and optimized to work directly in ReGameDLL_C
 - [ReGameDLL_CS](https://github.com/s1lentq/ReGameDLL_CS) installed;
 - Installed AMXModX ([`v1.9`](https://www.amxmodx.org/downloads-new.php) or [`v1.10`](https://www.amxmodx.org/downloads-new.php?branch=master));
 - Installed [ReAPI](https://github.com/s1lentq/reapi) amxx module; 
+- Installed [AmxxEasyHttp](https://github.com/Next21Team/AmxxEasyHttp) module (optional);
 
 ## Installation
 Check the wiki [Installation](https://redeathmatch.github.io/en/Getting-started/installation/)

.github/workflows/CI.yml

@@ -143,3 +143,4 @@ jobs:
         with:
           files: |
             *.zip
+            *.amxx

Dockerfile

@@ -32,6 +32,10 @@ RUN curl -sSL ${AMXModX_URL} | bsdtar -xf - addons/  \
 RUN releaseLink="https://github.com/s1lentq/reapi/releases/download/5.24.0.300/reapi-bin-5.24.0.300.zip" \
     && curl -sSL ${releaseLink} | bsdtar -xf - --exclude='*.dll' --exclude='*.pdb' addons/
 
+# # Install AmxxEasyHttp
+RUN releaseLink="https://github.com/Next21Team/AmxxEasyHttp/releases/download/1.3.0/release_linux_v1.3.0.zip" \
+    && curl -sSL ${releaseLink} | bsdtar -xf - --strip-components=1
+
 COPY cstrike .
 
 SHELL ["/bin/bash", "-c"]

cstrike/addons/amxmodx/scripting/ReDeathmatch.sma

@@ -4,6 +4,7 @@
 #include <fakemeta_util>
 #include <amxmisc>
 #include <json>
+#include <easy_http>
 
 #include <reapi>
 #include <redm>
@@ -19,6 +20,7 @@
 #include "ReDeathmatch/ReDM_features.inc"
 #include "ReDeathmatch/ReDM_round_modes.inc"
 #include "ReDeathmatch/ReDM_api.inc"
+#include "ReDeathmatch/ReDM_updater.inc"
 
 
 static bool: g_prevState
@@ -65,6 +67,7 @@ public plugin_init() {
     register_concmd("redm", "ConCmd_redm", ADMIN_MAP, "Get info.", .FlagManager = false)
 
     ApiInit_Forwards()
+    Updater_Init()
 }
 
 public plugin_precache() {
@@ -111,6 +114,11 @@ public plugin_unpause() {
     SetActive(true)
 }
 
+public plugin_natives() {
+    ApiInit_Natives()
+    Updater_Natives()
+}
+
 public client_putinserver(player) {
     if (!IsActive())
         return

cstrike/addons/amxmodx/scripting/ReDeathmatch/ReDM_api.inc

@@ -6,7 +6,7 @@ static g_fwdGetConfigName = -1
 static g_fwdGetConfigPrefixName = -1
 
 
-public plugin_natives() {
+public ApiInit_Natives() {
     register_native("redm_is_active", "native_redm_is_active")
     register_native("redm_set_active", "native_redm_set_active")
     register_native("redm_get_config", "native_redm_get_config")

cstrike/addons/amxmodx/scripting/ReDeathmatch/ReDM_updater.inc

@@ -0,0 +1,148 @@
+static const g_versionLink[] = "https://api.github.com/repos/"
+    + "ReDeathmatch/ReDeathmatch_AMXX"
+    + "/releases/latest"
+
+static bool: redm_update_notify
+
+Updater_Init() {
+    bind_pcvar_num(
+        create_cvar(
+            "redm_update_notify", "1",
+            .has_min = true, .min_val = 0.0,
+            .has_max = true, .max_val = 1.0,
+            .flags = _FCVAR_BOOLEAN,
+            .description = "Notify for new ReDM update.^n\
+                Don't use into ReDM configs!"
+        ),
+        redm_update_notify
+    )
+
+    register_concmd(
+        "redm_update_check", "ConCmd_redm_update_check",
+        ADMIN_MAP,
+        "Checks ReDM update."
+    )
+
+    CheckUpdate()
+}
+
+public ConCmd_redm_update_check(const player) {
+    SetGlobalTransTarget(player)
+
+    if (!cmd_access(player, level, commandId, 1))
+        return PLUGIN_HANDLED
+
+    Request_NewVersion(g_versionLink)
+
+    return PLUGIN_HANDLED
+}
+
+Updater_Natives() {
+    set_module_filter("@ModuleFilter")
+    set_native_filter("@NativeFilter")
+}
+
+@ModuleFilter(const library[], LibType: type) {
+    return strcmp("easy_http", library) == 0 ? PLUGIN_HANDLED : PLUGIN_CONTINUE
+}
+
+@NativeFilter(const nativeName[], index, trap) {
+    if (strncmp(nativeName, "ezhttp_", 7) == 0)
+        return PLUGIN_HANDLED
+
+    if (strncmp(nativeName, "ezjson_", 7) == 0)
+        return PLUGIN_HANDLED
+
+    return PLUGIN_CONTINUE
+}
+
+static CheckUpdate() {
+    if (!redm_update_notify)
+        return
+
+    new bool: isManualBuild = (strfind(REDM_VERSION, "manual") != -1)
+    if (isManualBuild)
+        return
+
+    if (is_module_loaded("Amxx Easy Http") == -1) {
+        LogMessageEx(Warning, "The `AmxxEasyHttp` module is not loaded! The new version cannot be verified.")
+        LogMessageEx(Warning, "Please install AmxxEasyHttp: `https://github.com/Next21Team/AmxxEasyHttp` or disable update checks (`redm_update_notify 0`).")
+
+        return
+    }
+
+    Request_NewVersion(g_versionLink)
+}
+
+static Request_NewVersion(const link[]) {
+    ezhttp_get(link, "@RequestCallback_NewVersion")
+}
+
+@RequestCallback_NewVersion(EzHttpRequest: request_id) {
+    if (ezhttp_get_error_code(request_id) != EZH_OK) {
+        new error[64]
+        ezhttp_get_error_message(request_id, error, charsmax(error))
+
+        LogMessageEx(Warning, "RequestCallback_NewVersion(%i): Response error: %s", request_id, error)
+        return
+    }
+
+    new response[8192]
+    ezhttp_get_data(request_id, response, charsmax(response))
+
+    if (contain(response, "tag_name") == -1) {
+        LogMessageEx(Warning, "RequestCallback_NewVersion: Wrong response! (don't contain `tag_name`). res=`%s`", response)
+        return
+    }
+
+    new EzJSON: json = ezjson_parse(response)
+    if (json == EzInvalid_JSON) {
+        LogMessageEx(Warning, "RequestCallback_NewVersion: Can't parse response JSON!")
+        goto END
+    }
+
+    new tag_name[32]
+    ezjson_object_get_string(json, "tag_name", tag_name, charsmax(tag_name))
+
+    if (CmpVersions(REDM_VERSION, tag_name) >= 0)
+        goto END
+
+    new html_url[256]
+    ezjson_object_get_string(json, "html_url", html_url, charsmax(html_url))
+
+    NotifyUpdate(tag_name, html_url)
+
+    END:
+    ezjson_free(json)
+}
+
+static NotifyUpdate(const newVersion[], const URL[]) {
+    LogMessageEx(Info, "^n^t ReDeathmatch (%s) has update! New version `%s`.^n\
+        Download link: `%s`", REDM_VERSION, newVersion, URL
+    )
+}
+
+static stock CmpVersions(const a[], const b[]) {
+    new segmentsA[32][32]
+    new segmentsB[32][32]
+
+    new countA = explode_string(
+        a[!isdigit(a[0]) ? 1 : 0],
+        ".",
+        segmentsA, sizeof segmentsA, charsmax(segmentsA[])
+    )
+
+    new countB = explode_string(
+        b[!isdigit(b[0]) ? 1 : 0],
+        ".",
+        segmentsB, sizeof segmentsB, charsmax(segmentsB[])
+    )
+
+    for(new i, l = min(countA, countB); i < l; i++) {
+        new diff = strtol(segmentsA[i]) - strtol(segmentsB[i])
+        if (diff)
+            return diff
+    }
+
+    return countA - countB
+}