feat: add frontend dashboard endpoint & placeholder data

ruyi_backend/app/frontend.py

@@ -0,0 +1,31 @@
+from fastapi import APIRouter
+
+from ..db.conn import DIMainDB
+from ..schema.frontend import DashboardDataV1, DashboardEventDetailV1
+
+router = APIRouter()
+
+
+@router.post("/fe/dashboard")
+async def get_dashboard_data_v1(main_db: DIMainDB) -> DashboardDataV1:
+    # TODO: query the crunched numbers
+    _ = main_db
+
+    # this is placeholder data
+    top_pkgs = {
+        "toolchain/gnu-milkv-milkv-duo-musl-bin": DashboardEventDetailV1(total=4),
+        "toolchain/gnu-upstream": DashboardEventDetailV1(total=3),
+        "toolchain/gnu-plct": DashboardEventDetailV1(total=2),
+        "board-image/buildroot-sdk-milkv-duo": DashboardEventDetailV1(total=1),
+    }
+    top_cmds = {
+        "riscv64-unknown-linux-musl-gcc": DashboardEventDetailV1(total=100),
+        "riscv64-unknown-linux-musl-g++": DashboardEventDetailV1(total=50),
+        "riscv64-unknown-linux-musl-ld": DashboardEventDetailV1(total=5),
+    }
+    return DashboardDataV1(
+        downloads=DashboardEventDetailV1(total=20),
+        installs=DashboardEventDetailV1(total=5),
+        top_packages=top_pkgs,
+        top_commands=top_cmds,
+    )

ruyi_backend/config/env.py

@@ -24,10 +24,10 @@ class EnvConfig(BaseSettings, case_sensitive=False):
 
 
 def get_env_config() -> EnvConfig:
-    if _ENV_CONFIG is not None:
+    if _ENV_CONFIG is None:
         init_env_config()
-        return _ENV_CONFIG
-    raise RuntimeError("EnvConfig not initialized")
+        assert _ENV_CONFIG is not None
+    return _ENV_CONFIG
 
 
 def init_env_config() -> None:

ruyi_backend/schema/frontend.py

@@ -0,0 +1,12 @@
+from pydantic import BaseModel
+
+
+class DashboardEventDetailV1(BaseModel):
+    total: int
+
+
+class DashboardDataV1(BaseModel):
+    downloads: DashboardEventDetailV1 | None
+    installs: DashboardEventDetailV1 | None
+    top_packages: dict[str, DashboardEventDetailV1 | None]
+    top_commands: dict[str, DashboardEventDetailV1 | None]