package cabana_test

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

	"git.golem15.com/golem15/summercms/modules/cabana"
	"git.golem15.com/golem15/summercms/modules/lagoon"
)

func fileList(t *testing.T, rec *httptest.ResponseRecorder) []cabana.FileItem {
	t.Helper()
	if rec.Code != http.StatusOK {
		t.Fatalf("file list status=%d body=%s", rec.Code, rec.Body.String())
	}
	var body cabana.Envelope[[]cabana.FileItem]
	if err := json.Unmarshal(rec.Body.Bytes(), &body); err != nil {
		t.Fatalf("file list: %v\n%s", err, rec.Body.String())
	}
	return body.Data
}

func (e *conformEnv) listFiles(t *testing.T, id uint, field, key string) []cabana.FileItem {
	t.Helper()
	headers := map[string]string{}
	if key != "" {
		headers[cabana.SessionKeyHeader] = key
	}
	return fileList(t, e.sendWith(t, http.MethodGet, fmt.Sprintf("/acme/conform/gadgets/%d/files/%s", id, field), nil, "", headers))
}

func (e *conformEnv) loginAs(t *testing.T, login string) {
	t.Helper()
	e.login = login
	if rec := e.send(t, http.MethodPost, "/auth/login", map[string]string{"login": login, "password": adminTestPassword}, false); rec.Code != http.StatusOK {
		t.Fatalf("login %s status=%d body=%s", login, rec.Code, rec.Body.String())
	}
}

func (e *conformEnv) bindingCount(t *testing.T, key string) int64 {
	t.Helper()
	var n int64
	if err := e.db.Model(&lagoon.DeferredBinding{}).Where("session_key = ?", key).Count(&n).Error; err != nil {
		t.Fatal(err)
	}
	return n
}

// TestFileuploadSmokeCreateCommit uploads an image to the create form (id 0)
// and saves the record with the same session key: the file is attached to
// the new record and the binding is gone.
func TestFileuploadSmokeCreateCommit(t *testing.T) {
	env := newConformEnv(t)
	env.loginAs(t, env.login)
	key := newSessionKey(t)

	up := env.upload(t, 0, "photos", "photo.png", conformPNG(t), key)
	if up.Code != http.StatusCreated {
		t.Fatalf("upload status=%d body=%s", up.Code, up.Body.String())
	}
	if got := env.listFiles(t, 0, "photos", key); len(got) != 1 || !got[0].Pending {
		t.Fatalf("pending list = %#v", got)
	}
	payload, _ := json.Marshal(map[string]any{"name": "smoke-" + env.stamp})
	created := env.sendWith(t, http.MethodPost, "/acme/conform/gadgets", payload, "application/json", map[string]string{cabana.SessionKeyHeader: key})
	if created.Code != http.StatusCreated {
		t.Fatalf("create status=%d body=%s", created.Code, created.Body.String())
	}
	id := dataID(t, created.Body.Bytes())
	got := env.listFiles(t, id, "photos", "")
	if len(got) != 1 || got[0].Pending || got[0].FileName != "photo.png" || got[0].URL == "" {
		t.Fatalf("attached list = %#v", got)
	}
	if n := env.bindingCount(t, key); n != 0 {
		t.Fatalf("deferred_bindings rows for the key after save = %d", n)
	}
	// Without the key, the unsaved form shows nothing: id 0 is 404.
	if rec := env.sendWith(t, http.MethodGet, "/acme/conform/gadgets/0/files/photos", nil, "", nil); rec.Code != http.StatusNotFound {
		t.Fatalf("id 0 without key status=%d", rec.Code)
	}
	// A malformed key is a 422 on session_key.
	if rec := env.sendWith(t, http.MethodGet, "/acme/conform/gadgets/0/files/photos", nil, "", map[string]string{cabana.SessionKeyHeader: "short"}); rec.Code != http.StatusUnprocessableEntity {
		t.Fatalf("malformed key status=%d", rec.Code)
	}
}

// TestFileuploadSmokeForeignAdmin replays one admin's session key as another
// admin: the pending upload is neither listed nor committed.
func TestFileuploadSmokeForeignAdmin(t *testing.T) {
	env := newConformEnv(t)
	env.loginAs(t, env.login)
	key := newSessionKey(t)
	if up := env.upload(t, 0, "photos", "photo.png", conformPNG(t), key); up.Code != http.StatusCreated {
		t.Fatalf("upload status=%d body=%s", up.Code, up.Body.String())
	}

	other := *env
	login := "other-" + env.stamp
	insertAdmin(t, env.db, login, login+"@example.test", adminTestPassword, true, false)
	other.loginAs(t, login)
	if got := other.listFiles(t, 0, "photos", key); len(got) != 0 {
		t.Fatalf("foreign admin sees %#v", got)
	}
	payload, _ := json.Marshal(map[string]any{"name": "foreign-" + env.stamp})
	created := other.sendWith(t, http.MethodPost, "/acme/conform/gadgets", payload, "application/json", map[string]string{cabana.SessionKeyHeader: key})
	if created.Code != http.StatusCreated {
		t.Fatalf("create status=%d body=%s", created.Code, created.Body.String())
	}
	if got := other.listFiles(t, dataID(t, created.Body.Bytes()), "photos", ""); len(got) != 0 {
		t.Fatalf("foreign save attached %#v", got)
	}
	if n := env.bindingCount(t, key); n != 1 {
		t.Fatalf("owner's binding rows = %d, want 1", n)
	}
}