package web

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

	"git.d-ma.be/mathias/cad-atlas/internal/atlas"
)

func TestRootServesAtlas(t *testing.T) {
	srv := httptest.NewServer(NewHandler())
	defer srv.Close()

	resp, err := http.Get(srv.URL + "/")
	if err != nil {
		t.Fatalf("GET /: %v", err)
	}
	defer func() { _ = resp.Body.Close() }()

	if resp.StatusCode != http.StatusOK {
		t.Fatalf("GET / status = %d, want 200", resp.StatusCode)
	}
	buf := make([]byte, 4096)
	n, _ := resp.Body.Read(buf)
	if !strings.Contains(string(buf[:n]), "CAD") {
		t.Fatalf("GET / body missing atlas marker %q", "CAD")
	}
}

func TestAtlasJSON_ServesAtlasWithGeneratedCIStage(t *testing.T) {
	srv := httptest.NewServer(NewHandler())
	defer srv.Close()

	resp, err := http.Get(srv.URL + "/api/atlas.json")
	if err != nil {
		t.Fatalf("GET /api/atlas.json: %v", err)
	}
	defer func() { _ = resp.Body.Close() }()

	if resp.StatusCode != http.StatusOK {
		t.Fatalf("status = %d, want 200", resp.StatusCode)
	}
	var a atlas.Atlas
	if err := json.NewDecoder(resp.Body).Decode(&a); err != nil {
		t.Fatalf("decode atlas: %v", err)
	}
	if len(a.Stages) == 0 {
		t.Fatal("atlas has no stages")
	}

	// The generate:ci-jobs stage must be populated from the real cd.yml jobs.
	got := map[string]bool{}
	for _, s := range a.Stages {
		if s.No == "STAGE 06" {
			for _, n := range s.Nodes {
				got[n.Title] = true
			}
		}
	}
	for _, want := range []string{"guard", "check", "build", "deploy"} {
		if !got[want] {
			t.Fatalf("CI stage missing generated job %q (got %v)", want, got)
		}
	}
}

func TestUnknownPath404(t *testing.T) {
	srv := httptest.NewServer(NewHandler())
	defer srv.Close()

	resp, err := http.Get(srv.URL + "/nope")
	if err != nil {
		t.Fatalf("GET /nope: %v", err)
	}
	defer func() { _ = resp.Body.Close() }()

	if resp.StatusCode != http.StatusNotFound {
		t.Fatalf("GET /nope status = %d, want 404", resp.StatusCode)
	}
}