package validators

import (
	"context"
	"encoding/json"
	"fmt"
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"testing"

	ck "gitea.maximumdirect.net/eric/ConfigKit"
	"gitea.maximumdirect.net/eric/audita/internal/core/config"
	"gitea.maximumdirect.net/eric/audita/internal/framework/llm"
	"gitea.maximumdirect.net/eric/audita/internal/framework/outcomes"
	"gitea.maximumdirect.net/eric/audita/internal/framework/proposals"
)

func TestValidationRepairAndRuntimeFailuresThroughDomainBoundary(t *testing.T) {
	valid := `{"validations":[{"correction_index":0,"approved":true,"confidence":0.9,"reason":"ok"}]}`
	for _, tc := range []struct {
		name         string
		responses    []string
		wantCalls    int
		wantApproved bool
		wantFailure  outcomes.ReasonCode
	}{
		{"repair reaches decisions", []string{`{"wrong":true}`, valid}, 2, true, ""},
		{"exhausted repair rejects batch", []string{`{"wrong":true}`, `{"wrong":true}`}, 2, false, outcomes.ReasonInvalidOutputExhausted},
		{"malformed envelope excludes batch", []string{"MALFORMED_ENVELOPE"}, 1, false, outcomes.ReasonProviderResponseInvalid},
	} {
		t.Run(tc.name, func(t *testing.T) {
			calls := 0
			server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
				calls++
				output := tc.responses[len(tc.responses)-1]
				if calls <= len(tc.responses) {
					output = tc.responses[calls-1]
				}
				if output == "MALFORMED_ENVELOPE" {
					_, _ = fmt.Fprint(w, `{"choices":[]}`)
					return
				}
				content, _ := json.Marshal(output)
				_, _ = fmt.Fprintf(w, `{"choices":[{"message":{"content":%s}}]}`, content)
			}))
			defer server.Close()
			dir := t.TempDir()
			if err := os.Mkdir(filepath.Join(dir, "profiles"), 0700); err != nil {
				t.Fatal(err)
			}
			main := filepath.Join(dir, "config.yml")
			content := fmt.Sprintf("version: 2\nbackends:\n  offline:\n    endpoint: %s/v1\nllm:\n  proposal_profile: base\n  transient_retries: 0\n  repair_attempts: 1\n", server.URL)
			if err := os.WriteFile(main, []byte(content), 0600); err != nil {
				t.Fatal(err)
			}
			if err := os.WriteFile(filepath.Join(dir, "profiles", "base.yaml"), []byte("id: base\nbackend: offline\nmodel: local-model\n"), 0600); err != nil {
				t.Fatal(err)
			}
			loaded, err := config.Load(ck.File(main), "")
			if err != nil {
				t.Fatal(err)
			}
			runtime, err := llm.NewRuntime(context.Background(), loaded.Config, main, server.Client())
			if err != nil {
				t.Fatal(err)
			}
			client, err := runtime.NewRoleClient("validation", llm.CallHooks{})
			if err != nil {
				t.Fatal(err)
			}
			validator, err := NewLLMBackedValidator("editorial_review", LLMValidatorTypeEditorialReview)
			if err != nil {
				t.Fatal(err)
			}
			req := makeReq([]proposals.EnrichedCorrectionProposal{mk(0, "gestures", "Jesters")})
			req.Config = &loaded.Config
			req.LLMClient = client
			result, err := validator.Validate(context.Background(), req)
			if calls != tc.wantCalls {
				t.Fatalf("calls=%d, want %d", calls, tc.wantCalls)
			}
			if err != nil {
				t.Fatal(err)
			}
			if len(result.Decisions) != 1 || result.Decisions[0].Approved != tc.wantApproved || len(result.Operations) != 1 || result.Operations[0].FailureReason != tc.wantFailure {
				t.Fatalf("domain result: %+v", result)
			}
		})
	}
}