package cmd

import (
	"bytes"
	"encoding/json"
	"io"
	"net/http"
	"net/http/httptest"
	"reflect"
	"testing"
)

func TestSearchCmd_SendsDocTypeAndTagsList(t *testing.T) {
	var captured map[string]interface{}
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path != "/api/v1/search" {
			t.Errorf("unexpected path: %s", r.URL.Path)
		}
		body, _ := io.ReadAll(r.Body)
		if err := json.Unmarshal(body, &captured); err != nil {
			t.Fatalf("failed to decode request body: %v", err)
		}
		w.Header().Set("Content-Type", "application/json")
		w.Write([]byte(`{"query":"q","results":[],"total_matches":0,"returned":0}`))
	}))
	defer server.Close()

	var stdout bytes.Buffer
	rootCmd.SetOut(&stdout)
	rootCmd.SetArgs([]string{
		"search", "oil level",
		"--engine", server.URL,
		"--format", "json",
		"--type", "pdf",
		"--tags", "manuals, ops,",
	})

	if err := rootCmd.Execute(); err != nil {
		t.Fatalf("search command failed: %v", err)
	}

	if captured == nil {
		t.Fatal("no request captured by test server")
	}
	if got := captured["doc_type"]; got != "pdf" {
		t.Errorf("expected doc_type=pdf in body, got %v (full body: %v)", got, captured)
	}
	if _, present := captured["type"]; present {
		t.Error("body must not contain legacy 'type' key")
	}
	tags, ok := captured["tags"].([]interface{})
	if !ok {
		t.Fatalf("expected tags to be a JSON array, got %T (%v)", captured["tags"], captured["tags"])
	}
	want := []interface{}{"manuals", "ops"}
	if !reflect.DeepEqual(tags, want) {
		t.Errorf("expected tags %v, got %v", want, tags)
	}
}

func TestSplitTags(t *testing.T) {
	got := splitTags(" a ,b,, c ")
	want := []string{"a", "b", "c"}
	if !reflect.DeepEqual(got, want) {
		t.Errorf("splitTags: expected %v, got %v", want, got)
	}
}