import type Database from "bun:sqlite";

import { describe, expect, test } from "bun:test";

import { createConversation, createMessage, deleteConversation } from "../../../src/server/db/conversations";
import { createMaterial, deleteMaterial, listMaterials } from "../../../src/server/db/materials";
import { createModel, deleteModel, listModels } from "../../../src/server/db/models";
import { createProject, deleteProject, listProjects, updateProject } from "../../../src/server/db/projects";
import { createProvider, deleteProvider } from "../../../src/server/db/providers";
import { createNoopLogger } from "../../../src/server/logger";
import { createMigratedTestDatabase } from "../../helpers";

const log = createNoopLogger();

function withDb(callback: (db: Database) => void): void {
  const handle = createMigratedTestDatabase("soft-delete-test");
  try {
    callback(handle.db);
    handle.close();
  } finally {
    handle.cleanup();
  }
}

describe("软删除与级联", () => {
  describe("V1: 删除 project 级联软删 conversations + materials + messages", () => {
    test("归档项目软删除后，关联会话/消息/素材均被软删", () => {
      withDb((db) => {
        const projectRes = createProject(db, { name: "P1" }, log);
        const projectId = (projectRes as { project: { id: string } }).project.id;

        const providerRes = createProvider(
          db,
          { apiKey: "sk", baseUrl: "https://a.com", name: "Prov", type: "openai" },
          log,
        );
        const modelRes = createModel(
          db,
          {
            capabilities: ["text"],
            externalId: "gpt-4",
            name: "GPT",
            providerId: (providerRes as { provider: { id: string } }).provider.id,
          },
          log,
        );
        const modelId = (modelRes as { model: { id: string } }).model.id;

        const convRes = createConversation(db, projectId, log, modelId);
        const convId = (convRes as { conversation: { id: string } }).conversation.id;
        createMessage(db, { content: "hi", conversationId: convId, role: "user" }, log);

        createMaterial(db, projectId, { associatedDate: "2024-01-01", description: "M1" }, log);

        db.exec("UPDATE projects SET status = 'archived' WHERE id = ?", [projectId]);
        const del = deleteProject(db, projectId, log);
        expect("error" in del).toBe(false);

        const projectRow = db.query("SELECT deleted_at FROM projects WHERE id = ?").get(projectId) as {
          deleted_at: null | string;
        };
        const convRow = db.query("SELECT deleted_at FROM conversations WHERE id = ?").get(convId) as {
          deleted_at: null | string;
        };
        const messageRow = db.query("SELECT deleted_at FROM messages WHERE conversation_id = ?").get(convId) as {
          deleted_at: null | string;
        };
        const materialRow = db.query("SELECT deleted_at FROM materials WHERE project_id = ?").get(projectId) as {
          deleted_at: null | string;
        };

        expect(projectRow.deleted_at).not.toBeNull();
        expect(convRow.deleted_at).not.toBeNull();
        expect(messageRow.deleted_at).not.toBeNull();
        expect(materialRow.deleted_at).not.toBeNull();
      });
    });
  });

  describe("V2: 删除 conversation 级联软删 messages", () => {
    test("会话软删除后，其下消息均被软删", () => {
      withDb((db) => {
        const projectRes = createProject(db, { name: "P2" }, log);
        const projectId = (projectRes as { project: { id: string } }).project.id;

        const providerRes = createProvider(
          db,
          { apiKey: "sk", baseUrl: "https://a.com", name: "Prov2", type: "openai" },
          log,
        );
        const modelRes = createModel(
          db,
          {
            capabilities: ["text"],
            externalId: "claude",
            name: "Claude",
            providerId: (providerRes as { provider: { id: string } }).provider.id,
          },
          log,
        );
        const modelId = (modelRes as { model: { id: string } }).model.id;

        const convRes = createConversation(db, projectId, log, modelId);
        const convId = (convRes as { conversation: { id: string } }).conversation.id;
        createMessage(db, { content: "m1", conversationId: convId, role: "user" }, log);
        createMessage(db, { content: "m2", conversationId: convId, role: "assistant" }, log);

        const del = deleteConversation(db, convId, log);
        expect("error" in del).toBe(false);

        const messages = db.query("SELECT deleted_at FROM messages WHERE conversation_id = ?").all(convId) as Array<{
          deleted_at: null | string;
        }>;
        expect(messages.length).toBe(2);
        expect(messages.every((m) => m.deleted_at !== null)).toBe(true);
      });
    });
  });

  describe("V3: paginateQuery softDelete 自动过滤已删除行", () => {
    test("listProjects 自动排除软删除项目", () => {
      withDb((db) => {
        createProject(db, { name: "Alive1" }, log);
        createProject(db, { name: "Alive2" }, log);

        const toDelete = createProject(db, { name: "Dying" }, log);
        const dyingId = (toDelete as { project: { id: string } }).project.id;
        db.exec("UPDATE projects SET status = 'archived' WHERE id = ?", [dyingId]);
        deleteProject(db, dyingId, log);

        const result = listProjects(db, { page: 1, pageSize: 20 });
        expect(result.total).toBe(2);
        expect(result.items.map((p) => p.name).sort()).toEqual(["Alive1", "Alive2"]);
      });
    });

    test("listMaterials 自动排除软删除素材", () => {
      withDb((db) => {
        const proj = createProject(db, { name: "PM" }, log);
        const projectId = (proj as { project: { id: string } }).project.id;

        createMaterial(db, projectId, { associatedDate: "2024-01-01", description: "K1" }, log);
        createMaterial(db, projectId, { associatedDate: "2024-01-02", description: "K2" }, log);

        const toDelete = createMaterial(db, projectId, { associatedDate: "2024-01-03", description: "K3" }, log);
        const materialId = (toDelete as { material: { id: string } }).material.id;
        deleteMaterial(db, projectId, materialId, log);

        const result = listMaterials(db, projectId, { page: 1, pageSize: 20 });
        expect(result.total).toBe(2);
        expect(result.items.map((m) => m.description).sort()).toEqual(["K1", "K2"]);
      });
    });

    test("listModels 自动排除软删除模型", () => {
      withDb((db) => {
        const prov = createProvider(db, { apiKey: "sk", baseUrl: "https://x.com", name: "Px", type: "openai" }, log);
        const providerId = (prov as { provider: { id: string } }).provider.id;

        createModel(db, { capabilities: ["text"], externalId: "a", name: "A", providerId }, log);
        createModel(db, { capabilities: ["text"], externalId: "b", name: "B", providerId }, log);

        const dying = createModel(db, { capabilities: ["text"], externalId: "c", name: "C", providerId }, log);
        deleteModel(db, (dying as { model: { id: string } }).model.id, log);

        const result = listModels(db, { page: 1, pageSize: 20 });
        expect(result.total).toBe(2);
        expect(result.items.map((m) => m.name).sort()).toEqual(["A", "B"]);
      });
    });
  });

  describe("V4: 应用层唯一约束（软删后同名复活）", () => {
    test("软删除项目后可以创建同名项目", () => {
      withDb((db) => {
        const first = createProject(db, { name: "SameName" }, log);
        const firstId = (first as { project: { id: string } }).project.id;

        db.exec("UPDATE projects SET status = 'archived' WHERE id = ?", [firstId]);
        deleteProject(db, firstId, log);

        const second = createProject(db, { name: "SameName" }, log);
        expect("error" in second).toBe(false);
      });
    });

    test("未删除同名项目存在时创建失败（409）", () => {
      withDb((db) => {
        createProject(db, { name: "ClashName" }, log);
        const result = createProject(db, { name: "ClashName" }, log);
        expect("error" in result).toBe(true);
        expect((result as unknown as { status: number }).status).toBe(409);
      });
    });

    test("更新项目名称不与自身冲突", () => {
      withDb((db) => {
        const created = createProject(db, { name: "SelfUpdate" }, log);
        const id = (created as { project: { id: string } }).project.id;
        const result = updateProject(db, id, { name: "SelfUpdate" }, log);
        expect("error" in result).toBe(false);
      });
    });
  });

  describe("V5: 删除 provider 时阻止（存在未删除 model）", () => {
    test("存在未删除 model 时删除 provider 返回错误", () => {
      withDb((db) => {
        const prov = createProvider(
          db,
          { apiKey: "sk", baseUrl: "https://p.com", name: "BlockProv", type: "openai" },
          log,
        );
        const providerId = (prov as { provider: { id: string } }).provider.id;

        createModel(db, { capabilities: ["text"], externalId: "blocking-model", name: "BlockM", providerId }, log);

        const result = deleteProvider(db, providerId, log);
        expect("error" in result).toBe(true);
        expect((result as unknown as { status: number }).status).toBe(409);
      });
    });

    test("所有 model 已软删除后可以删除 provider", () => {
      withDb((db) => {
        const prov = createProvider(
          db,
          { apiKey: "sk", baseUrl: "https://p.com", name: "FreeProv", type: "openai" },
          log,
        );
        const providerId = (prov as { provider: { id: string } }).provider.id;

        const m = createModel(db, { capabilities: ["text"], externalId: "free-model", name: "FreeM", providerId }, log);
        deleteModel(db, (m as { model: { id: string } }).model.id, log);

        const result = deleteProvider(db, providerId, log);
        expect("error" in result).toBe(false);
      });
    });
  });
});