package server_test

import (
	"net/http"
	"testing"

	"gitea.meghsakha.com/platform/tenant-registry/internal/store"
)

func TestAppendAndListAudit(t *testing.T) {
	eachStore(t, func(t *testing.T, h *testHarness) {
		// Take a snapshot of the audit count beforehand (the seed acme tenant
		// + any /v1/tenants POST in earlier subtests already emit events).
		resp, body := h.do("GET", "/v1/audit?limit=500", nil)
		if resp.StatusCode != 200 {
			t.Fatalf("baseline list status = %d", resp.StatusCode)
		}
		baseline := decode[struct {
			Items []store.AuditEvent `json:"items"`
		}](t, body)
		before := len(baseline.Items)

		// Append three events.
		for i := 0; i < 3; i++ {
			resp, body := h.do("POST", "/v1/audit", map[string]any{
				"tenant_id": h.tenant.ID, "action": "test.event",
				"actor_id": "u1", "actor_name": "Test User",
				"metadata": map[string]any{"i": i},
			})
			if resp.StatusCode != http.StatusCreated {
				t.Fatalf("append %d status = %d, body=%s", i, resp.StatusCode, body)
			}
		}

		// List again, expect baseline + 3
		resp, body = h.do("GET", "/v1/audit?limit=500", nil)
		if resp.StatusCode != 200 {
			t.Fatalf("list status = %d", resp.StatusCode)
		}
		after := decode[struct {
			Items []store.AuditEvent `json:"items"`
		}](t, body)
		if len(after.Items) != before+3 {
			t.Errorf("expected before+3=%d events, got %d", before+3, len(after.Items))
		}

		// Filter by action: only our test.event rows.
		resp, body = h.do("GET", "/v1/audit?action=test.event", nil)
		if resp.StatusCode != 200 {
			t.Fatalf("filter status = %d", resp.StatusCode)
		}
		filtered := decode[struct {
			Items []store.AuditEvent `json:"items"`
		}](t, body)
		if len(filtered.Items) != 3 {
			t.Errorf("expected 3 filtered events, got %d", len(filtered.Items))
		}
		for _, ev := range filtered.Items {
			if ev.Action != "test.event" {
				t.Errorf("filter leaked %q", ev.Action)
			}
		}
	})
}

func TestAppendAudit_actionRequired(t *testing.T) {
	eachStore(t, func(t *testing.T, h *testHarness) {
		resp, _ := h.do("POST", "/v1/audit", map[string]any{
			"tenant_id": h.tenant.ID,
		})
		if resp.StatusCode != http.StatusBadRequest {
			t.Fatalf("status = %d", resp.StatusCode)
		}
	})
}

func TestListAudit_invalidParams(t *testing.T) {
	eachStore(t, func(t *testing.T, h *testHarness) {
		cases := []string{
			"/v1/audit?since=notatime",
			"/v1/audit?until=notatime",
			"/v1/audit?limit=0",
			"/v1/audit?limit=10000",
			"/v1/audit?cursor=abc",
		}
		for _, p := range cases {
			resp, _ := h.do("GET", p, nil)
			if resp.StatusCode != http.StatusBadRequest {
				t.Errorf("%s: status = %d, want 400", p, resp.StatusCode)
			}
		}
	})
}

func TestAuditAutoEmittedOnTenantCreate(t *testing.T) {
	eachStore(t, func(t *testing.T, h *testHarness) {
		_, body := h.do("POST", "/v1/tenants", map[string]any{
			"slug": "audit-target", "name": "Audit Target",
		})
		freshWrap := decode[struct {
			Tenant *store.Tenant `json:"tenant"`
		}](t, body)
		fresh := freshWrap.Tenant

		resp, body := h.do("GET", "/v1/audit?action=tenant.created&tenant_id="+fresh.ID, nil)
		if resp.StatusCode != 200 {
			t.Fatalf("status = %d", resp.StatusCode)
		}
		events := decode[struct {
			Items []store.AuditEvent `json:"items"`
		}](t, body)
		if len(events.Items) != 1 || events.Items[0].TargetID != fresh.ID {
			t.Errorf("expected exactly one tenant.created event for %s, got %d items", fresh.ID, len(events.Items))
		}
	})
}