package com.nanri.aiimage.config;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.junit.jupiter.api.Test;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;

/**
 * task-202：Python-contract 夹具准备契约。
 * 校验 python-contract/*.json 存在、为合法 JSON、顶层字段与真实 DTO 对齐、已脱敏（无真实凭据）、
 * 可复现；字段来源与脱敏口径见同目录 README.md。
 */
class PythonContractFixtureTest {

    private static final Path DIR = Path.of(System.getProperty("user.dir"),
            "src/test/resources/python-contract");
    private static final ObjectMapper MAPPER = new ObjectMapper();

    private JsonNode json(String name) throws IOException {
        return MAPPER.readTree(Files.readAllBytes(DIR.resolve(name)));
    }

    private static Set<String> keys(JsonNode node) {
        List<String> names = new ArrayList<>();
        node.fieldNames().forEachRemaining(names::add);
        return Set.copyOf(names);
    }

    @Test
    void fixtureResultRequestExists() throws IOException {
        JsonNode n = json("result.request.json");
        assertEquals("sim-20260905-0001", n.path("submissionId").asText());
    }

    @Test
    void fixtureItemsExists() throws IOException {
        JsonNode n = json("items.response.json");
        assertTrue(n.path("items").isArray() && n.path("items").size() >= 1);
    }

    @Test
    void fixtureParsedPayloadExists() throws IOException {
        JsonNode n = json("parsed_payload.response.json");
        assertTrue(n.has("allItems") && n.has("groups") && n.has("items"));
    }

    @Test
    void fixtureHeartbeatExists() throws IOException {
        JsonNode req = json("heartbeat.request.json");
        JsonNode resp = json("heartbeat.response.json");
        assertTrue(req.has("moduleType") && req.has("phase"));
        assertTrue(resp.has("alive") && resp.has("status"));
    }

    @Test
    void fixtureSanitizedNoRealCredentials() throws IOException {
        String all = String.join("\n", List.of(
                Files.readString(DIR.resolve("parsed_payload.response.json")),
                Files.readString(DIR.resolve("result.request.json"))));
        assertFalse(all.contains("WTFrb"), "不得出现真实 DB/内部凭据");
        assertFalse(all.toLowerCase().contains("bearer "), "不得出现真实 token");
        JsonNode parsed = json("parsed_payload.response.json");
        assertEquals("<redacted>", parsed.path("apiKey").asText(), "apiKey 必须占位");
        assertFalse(parsed.path("aiPrompt").asText().toLowerCase().contains("真实"),
                "aiPrompt 不得含真实内容");
    }

    @Test
    void fixtureShapeValidJson() throws IOException {
        for (String name : List.of("heartbeat.request.json", "heartbeat.response.json",
                "items.response.json", "result.request.json", "parsed_payload.response.json")) {
            JsonNode n = json(name);
            assertTrue(n.isContainerNode(), name + " 应为 JSON 对象/数组");
        }
    }

    @Test
    void fixtureFieldsDocumentedByReadme() throws IOException {
        String readme = Files.readString(DIR.resolve("README.md"));
        assertTrue(readme.contains("TaskHeartbeatRequest") && readme.contains("CollectDataItemsPageVo")
                && readme.contains("SimilarAsinSubmitResultRequest")
                && readme.contains("SimilarAsinParsedPayloadDto"), "README 应说明字段来源");
        assertTrue(readme.contains("脱敏"), "README 应说明脱敏");
    }

    @Test
    void fixtureHeartbeatTopKeysMatchDto() throws IOException {
        assertEquals(Set.of("moduleType", "phase", "current", "total", "collectStage",
                        "currentKeyword", "searchCurrentPage", "searchTotalPages",
                        "detailProcessedAsins", "detailTotalAsins"),
                keys(json("heartbeat.request.json")), "心跳请求顶层字段应与 TaskHeartbeatRequest 对齐");
        assertEquals(Set.of("alive", "status", "moduleType", "message"),
                keys(json("heartbeat.response.json")), "心跳响应应与 TaskHeartbeatVo 对齐");
    }

    @Test
    void fixtureReproducibleStable() throws IOException {
        for (String name : List.of("heartbeat.request.json", "items.response.json",
                "result.request.json", "parsed_payload.response.json")) {
            String a = Files.readString(DIR.resolve(name));
            String b = Files.readString(DIR.resolve(name));
            assertEquals(a, b, name + " 应可复现");
        }
    }
}