//go:build llm_script

package main

import (
	"bytes"
	"encoding/json"
	"os"
	"path/filepath"
	"strings"
	"testing"
)

func TestBuildPerplexityPricingStructureSignatureCapturesShape(t *testing.T) {
	raw := `
# Models

| Model | Input Price | Output Price | Documentation |
| --- | --- | --- | --- |
| sonar | $1.00 / 1M tokens | $5.00 / 1M tokens | [Docs](https://example.com) |
`

	signature := buildPerplexityPricingStructureSignature(raw)
	if signature.ByteSize == 0 {
		t.Fatalf("期望 byte_size 非 0")
	}
	if signature.SHA256 == "" || signature.StructureSHA256 == "" {
		t.Fatalf("期望生成 sha256 签名: %+v", signature)
	}
	if len(signature.Headings) == 0 || signature.Headings[0] != "Models" {
		t.Fatalf("标题提取错误: %+v", signature.Headings)
	}
	if len(signature.TableHeaders) == 0 || !strings.Contains(signature.TableHeaders[0], "Input Price") {
		t.Fatalf("表头提取错误: %+v", signature.TableHeaders)
	}
	for _, key := range []string{"model_column", "input_price_column", "output_price_column", "documentation_column"} {
		if !signature.Contains[key] {
			t.Fatalf("期望识别 %s: %+v", key, signature.Contains)
		}
	}
}

func TestRunPerplexityPricingImportSnapshotOnlyWritesArtifacts(t *testing.T) {
	tempDir := t.TempDir()
	snapshotPath := filepath.Join(tempDir, "perplexity-live.md")
	signaturePath := filepath.Join(tempDir, "perplexity-live.signature.json")

	var out bytes.Buffer
	err := runPerplexityPricingImport(perplexityPricingImportConfig{
		URL:          defaultPerplexityPricingFetchURL,
		Fixture:      filepath.Join("testdata", "perplexity_pricing_sample.md"),
		DryRun:       true,
		SnapshotOnly: true,
		SnapshotOut:  snapshotPath,
		SignatureOut: signaturePath,
	}, nil, &out)
	if err != nil {
		t.Fatalf("runPerplexityPricingImport 返回错误: %v", err)
	}

	snapshotBytes, err := os.ReadFile(snapshotPath)
	if err != nil {
		t.Fatalf("读取 snapshot 失败: %v", err)
	}
	if !strings.Contains(string(snapshotBytes), "Input Price") {
		t.Fatalf("snapshot 内容错误")
	}

	signatureBytes, err := os.ReadFile(signaturePath)
	if err != nil {
		t.Fatalf("读取 signature 失败: %v", err)
	}
	var signature markdownPricingStructureSignature
	if err := json.Unmarshal(signatureBytes, &signature); err != nil {
		t.Fatalf("signature JSON 解析失败: %v", err)
	}
	if !signature.Contains["documentation_column"] {
		t.Fatalf("期望 signature 含 documentation_column: %+v", signature.Contains)
	}

	output := out.String()
	for _, want := range []string{
		"source=perplexity-pricing-snapshot",
		"snapshot_only=true",
		"signature_out=" + signaturePath,
		"snapshot_out=" + snapshotPath,
	} {
		if !strings.Contains(output, want) {
			t.Fatalf("输出缺少 %q，实际: %q", want, output)
		}
	}
}