package control

import (
    "bytes"
    "encoding/json"
    "net/http"
    "net/http/httptest"
    "testing"

    cfgpkg "github.com/jan/fm-rds-tx/internal/config"
)

func TestHealthz(t *testing.T) {
    srv := NewServer(cfgpkg.Default())
    req := httptest.NewRequest(http.MethodGet, "/healthz", nil)
    rec := httptest.NewRecorder()
    srv.Handler().ServeHTTP(rec, req)
    if rec.Code != http.StatusOK {
        t.Fatalf("unexpected status: %d", rec.Code)
    }
}

func TestStatus(t *testing.T) {
    srv := NewServer(cfgpkg.Default())
    req := httptest.NewRequest(http.MethodGet, "/status", nil)
    rec := httptest.NewRecorder()
    srv.Handler().ServeHTTP(rec, req)
    if rec.Code != http.StatusOK {
        t.Fatalf("unexpected status: %d", rec.Code)
    }
    var body map[string]any
    if err := json.Unmarshal(rec.Body.Bytes(), &body); err != nil {
        t.Fatalf("decode body: %v", err)
    }
    if body["service"] != "fm-rds-tx" {
        t.Fatalf("unexpected service: %v", body["service"])
    }
}

func TestDryRunEndpoint(t *testing.T) {
    srv := NewServer(cfgpkg.Default())
    req := httptest.NewRequest(http.MethodGet, "/dry-run", nil)
    rec := httptest.NewRecorder()
    srv.Handler().ServeHTTP(rec, req)
    if rec.Code != http.StatusOK {
        t.Fatalf("unexpected status: %d", rec.Code)
    }
    var body map[string]any
    if err := json.Unmarshal(rec.Body.Bytes(), &body); err != nil {
        t.Fatalf("decode body: %v", err)
    }
    if body["mode"] != "dry-run" {
        t.Fatalf("unexpected mode: %v", body["mode"])
    }
}

func TestConfigPatch(t *testing.T) {
    srv := NewServer(cfgpkg.Default())
    body := []byte(`{"toneLeftHz":900,"radioText":"hello world"}`)
    req := httptest.NewRequest(http.MethodPost, "/config", bytes.NewReader(body))
    rec := httptest.NewRecorder()
    srv.Handler().ServeHTTP(rec, req)
    if rec.Code != http.StatusOK {
        t.Fatalf("unexpected status: %d body=%s", rec.Code, rec.Body.String())
    }

    getReq := httptest.NewRequest(http.MethodGet, "/config", nil)
    getRec := httptest.NewRecorder()
    srv.Handler().ServeHTTP(getRec, getReq)
    if getRec.Code != http.StatusOK {
        t.Fatalf("unexpected status: %d", getRec.Code)
    }
}