package usecase

import (
	"context"
	"testing"

	"apps/backend/internal/module/ai"
	"apps/backend/internal/module/radar/domain"
)

func TestJudgeCacheAvoidsSecondProviderCall(t *testing.T) {
	client := &countingJudgeAI{}
	svc := New(nil)
	svc.AI = client
	cand := &domain.CandidatePost{ExternalID: "https://threads.net/@a/post/1", Text: "有人推薦保母嗎", Classification: "seeking_recommendation"}
	first, firstCredits, err := svc.JudgeCandidate(context.Background(), 42, nil, nil, cand)
	if err != nil {
		t.Fatal(err)
	}
	second, secondCredits, err := svc.JudgeCandidate(context.Background(), 42, nil, nil, cand)
	if err != nil {
		t.Fatal(err)
	}
	if client.calls != 1 || first == nil || second == nil || firstCredits == 0 || secondCredits != 0 {
		t.Fatalf("cache/provider accounting mismatch: calls=%d first=%d second=%d", client.calls, firstCredits, secondCredits)
	}
}

type countingJudgeAI struct{ calls int }

func (c *countingJudgeAI) Complete(context.Context, string, string, string) (string, error) {
	c.calls++
	return `{"status":"qualified","intent_score":80,"region_match":"unknown","reasons":[{"dimension":"authenticity","score":30,"reason":"真實求助"},{"dimension":"intent","score":30,"reason":"明確求推薦"},{"dimension":"region","score":15,"reason":"未提供地區"},{"dimension":"freshness","score":15,"reason":"近期貼文"},{"dimension":"fit","score":10,"reason":"命中需求"}]}`, nil
}
func (c *countingJudgeAI) CompleteStream(context.Context, string, string, string, func(string) error) (string, error) {
	c.calls++
	return `{"status":"qualified","intent_score":80,"region_match":"unknown","reasons":[{"dimension":"authenticity","score":30,"reason":"真實求助"},{"dimension":"intent","score":30,"reason":"明確求推薦"},{"dimension":"region","score":15,"reason":"未提供地區"},{"dimension":"freshness","score":15,"reason":"近期貼文"},{"dimension":"fit","score":10,"reason":"命中需求"}]}`, nil
}
func (c *countingJudgeAI) ListModels(context.Context, string) ([]string, error) {
	return []string{"test"}, nil
}

var _ ai.Client = (*countingJudgeAI)(nil)