package provider

import (
	"crypto/hmac"
	"crypto/sha256"
	"encoding/hex"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"orchestra/internal/domain"
	"os"
	"path/filepath"
	"testing"
)

func TestGiteaSourceNameDefaultsToRepo(t *testing.T) {
	if got := (Gitea{Repo: "orchestra"}).SourceName(); got != "gitea" {
		t.Fatalf("expected legacy unnamespaced source, got %q", got)
	}
	if got := (Gitea{Repo: "orchestra", Project: "correx"}).SourceName(); got != "gitea:correx" {
		t.Fatalf("expected namespaced source, got %q", got)
	}
}

func TestGiteaIngestWebhookTagsProject(t *testing.T) {
	g := Gitea{Owner: "kami", Repo: "correx-repo", Project: "correx", WebhookSecret: "s3cret"}
	body, _ := json.Marshal(map[string]any{
		"action": "opened",
		"issue":  map[string]any{"number": 42, "title": "fix thing", "body": "", "state": "open"},
	})
	mac := hmac.New(sha256.New, []byte("s3cret"))
	mac.Write(body)
	sig := hex.EncodeToString(mac.Sum(nil))

	sk := &sink{}
	if err := g.IngestWebhook(body, sig, sk); err != nil {
		t.Fatalf("ingest: %v", err)
	}
	if len(sk.events) != 1 {
		t.Fatalf("expected 1 event, got %d", len(sk.events))
	}
	var p struct {
		Project    string `json:"project"`
		Source     string `json:"source"`
		ExternalID string `json:"external_id"`
	}
	if err := json.Unmarshal(sk.events[0].Payload, &p); err != nil {
		t.Fatalf("unmarshal payload: %v", err)
	}
	if p.Project != "correx" || p.Source != "gitea:correx" || p.ExternalID != "42" {
		t.Fatalf("unexpected payload: %+v", p)
	}
}

func TestGiteaIngestWebhookRejectsBadSignature(t *testing.T) {
	g := Gitea{Owner: "kami", Repo: "r", Project: "p", WebhookSecret: "s3cret"}
	if err := g.IngestWebhook([]byte(`{"action":"opened","issue":{"number":1}}`), "wrong", &sink{}); err == nil {
		t.Fatal("expected signature rejection")
	}
}

func TestMultiGiteaReflectDispatchesByTaskSource(t *testing.T) {
	var hitCorrex, hitMaven bool
	correxSrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		hitCorrex = true
		w.WriteHeader(200)
	}))
	defer correxSrv.Close()
	mavenSrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		hitMaven = true
		w.WriteHeader(200)
	}))
	defer mavenSrv.Close()

	m := MultiGitea{Sources: map[string]Gitea{
		"gitea:correx": {BaseURL: correxSrv.URL, Owner: "kami", Repo: "correx-repo", Project: "correx"},
		"gitea:maven":  {BaseURL: mavenSrv.URL, Owner: "kami", Repo: "maven-repo", Project: "maven"},
	}}

	if err := m.ReflectTask(domain.Task{Source: "gitea:correx", ExternalID: "7"}, domain.Event{Type: "TaskCompleted"}); err != nil {
		t.Fatalf("reflect to correx: %v", err)
	}
	if !hitCorrex || hitMaven {
		t.Fatalf("expected only correx server hit, got correx=%v maven=%v", hitCorrex, hitMaven)
	}

	hitCorrex, hitMaven = false, false
	if err := m.ReflectTask(domain.Task{Source: "gitea:maven", ExternalID: "3"}, domain.Event{Type: "TaskFailed"}); err != nil {
		t.Fatalf("reflect to maven: %v", err)
	}
	if hitCorrex || !hitMaven {
		t.Fatalf("expected only maven server hit, got correx=%v maven=%v", hitCorrex, hitMaven)
	}

	// A task from a non-Gitea source (or an unregistered Gitea project) must
	// be a silent no-op, not an error.
	if err := m.ReflectTask(domain.Task{Source: "jsonl"}, domain.Event{Type: "TaskCompleted"}); err != nil {
		t.Fatalf("unmatched source should no-op, got %v", err)
	}
}

func TestLoadGiteaConfigsValidatesAndRejectsDuplicates(t *testing.T) {
	dir := t.TempDir()
	path := filepath.Join(dir, "gitea.json")
	good := `[
		{"project":"correx","base_url":"https://gitea.internal","owner":"kami","repo":"correx"},
		{"project":"maven","base_url":"https://gitea.internal","owner":"kami","repo":"maven"}
	]`
	if err := os.WriteFile(path, []byte(good), 0644); err != nil {
		t.Fatal(err)
	}
	cfgs, err := LoadGiteaConfigs(path)
	if err != nil || len(cfgs) != 2 {
		t.Fatalf("cfgs=%d err=%v", len(cfgs), err)
	}

	dupPath := filepath.Join(dir, "dup.json")
	dup := `[
		{"project":"correx","base_url":"https://gitea.internal","owner":"kami","repo":"correx"},
		{"project":"correx","base_url":"https://gitea.internal","owner":"kami","repo":"other"}
	]`
	if err := os.WriteFile(dupPath, []byte(dup), 0644); err != nil {
		t.Fatal(err)
	}
	if _, err := LoadGiteaConfigs(dupPath); err == nil {
		t.Fatal("expected duplicate project rejection")
	}

	incompletePath := filepath.Join(dir, "incomplete.json")
	if err := os.WriteFile(incompletePath, []byte(`[{"project":"x"}]`), 0644); err != nil {
		t.Fatal(err)
	}
	if _, err := LoadGiteaConfigs(incompletePath); err == nil {
		t.Fatal("expected missing-field rejection")
	}
}