import { describe, expect, it } from "vitest";
import {
  applyCodexProviderOverrides,
  applyCodexProviderOverridesWithAudit,
} from "@/lib/codex/provider-overrides";

describe("Codex 供应商级参数覆写", () => {
  it("当 providerType 不是 codex 时，应直接返回原对象且不做任何处理", () => {
    const provider = {
      providerType: "claude",
      codexReasoningEffortPreference: "high",
      codexParallelToolCallsPreference: "false",
    };

    const input: Record<string, unknown> = {
      model: "gpt-5-codex",
      input: [],
      parallel_tool_calls: true,
      reasoning: { effort: "low", summary: "auto" },
    };

    const output = applyCodexProviderOverrides(provider as any, input);
    expect(output).toBe(input);
    expect(output).toEqual(input);
  });

  it("当所有偏好均为 inherit/null 时，应保持请求不变", () => {
    const provider = {
      providerType: "codex",
      codexReasoningEffortPreference: null,
      codexReasoningSummaryPreference: null,
      codexTextVerbosityPreference: null,
      codexParallelToolCallsPreference: null,
    };

    const input: Record<string, unknown> = {
      model: "gpt-5-codex",
      input: [],
      parallel_tool_calls: false,
      reasoning: { effort: "low", summary: "auto" },
      text: { verbosity: "medium" },
    };
    const snapshot = structuredClone(input);

    const output = applyCodexProviderOverrides(provider as any, input);

    expect(output).toEqual(snapshot);
    expect(input).toEqual(snapshot);
  });

  it("当偏好值为字符串 inherit 时，应视为不覆写", () => {
    const provider = {
      providerType: "codex",
      codexReasoningEffortPreference: "inherit",
      codexReasoningSummaryPreference: "inherit",
      codexTextVerbosityPreference: "inherit",
      codexParallelToolCallsPreference: "inherit",
    };

    const input: Record<string, unknown> = {
      model: "gpt-5-codex",
      input: [],
      parallel_tool_calls: false,
      reasoning: { effort: "low", summary: "auto" },
      text: { verbosity: "medium", other: "keep" },
    };
    const snapshot = structuredClone(input);

    const output = applyCodexProviderOverrides(provider as any, input);

    expect(output).toEqual(snapshot);
    expect(input).toEqual(snapshot);
  });

  it("当强制 parallel_tool_calls 时，应覆写为对应布尔值", () => {
    const provider = {
      providerType: "codex",
      codexParallelToolCallsPreference: "false",
    };

    const input: Record<string, unknown> = {
      model: "gpt-5-codex",
      input: [],
      parallel_tool_calls: true,
    };

    const output = applyCodexProviderOverrides(provider as any, input);
    expect(output.parallel_tool_calls).toBe(false);
    expect(input.parallel_tool_calls).toBe(true);
  });

  it("当强制 reasoning.effort/summary 时，应覆写并保留 reasoning 的其他字段", () => {
    const provider = {
      providerType: "codex",
      codexReasoningEffortPreference: "high",
      codexReasoningSummaryPreference: "detailed",
    };

    const input: Record<string, unknown> = {
      model: "gpt-5-codex",
      input: [],
      reasoning: { effort: "low", summary: "auto", extra: "keep" },
    };

    const output = applyCodexProviderOverrides(provider as any, input);
    expect(output.reasoning).toEqual({ effort: "high", summary: "detailed", extra: "keep" });
    expect((input.reasoning as any).effort).toBe("low");
  });

  it("当请求缺少 reasoning/text 时，强制值应自动补齐对象结构", () => {
    const provider = {
      providerType: "codex",
      codexReasoningEffortPreference: "minimal",
      codexReasoningSummaryPreference: "auto",
      codexTextVerbosityPreference: "high",
    };

    const input: Record<string, unknown> = {
      model: "gpt-5-codex",
      input: [],
    };

    const output = applyCodexProviderOverrides(provider as any, input);
    expect(output.reasoning).toEqual({ effort: "minimal", summary: "auto" });
    expect(output.text).toEqual({ verbosity: "high" });
  });

  it("审计：当 providerType 不是 codex 时，应返回 audit=null 且保持引用不变", () => {
    const provider = {
      id: 123,
      name: "P",
      providerType: "claude",
      codexParallelToolCallsPreference: "false",
    };

    const input: Record<string, unknown> = {
      model: "gpt-5-codex",
      input: [],
      parallel_tool_calls: true,
    };

    const result = applyCodexProviderOverridesWithAudit(provider as any, input);
    expect(result.request).toBe(input);
    expect(result.audit).toBeNull();
  });

  it("审计：当所有偏好均为 inherit/null 时，应返回 audit=null 且不做覆写", () => {
    const provider = {
      providerType: "codex",
      codexReasoningEffortPreference: "inherit",
      codexReasoningSummaryPreference: null,
      codexTextVerbosityPreference: "inherit",
      codexParallelToolCallsPreference: null,
    };

    const input: Record<string, unknown> = {
      model: "gpt-5-codex",
      input: [],
      parallel_tool_calls: false,
      reasoning: { effort: "low", summary: "auto" },
      text: { verbosity: "medium" },
    };

    const result = applyCodexProviderOverridesWithAudit(provider as any, input);
    expect(result.request).toBe(input);
    expect(result.audit).toBeNull();
  });

  it("审计：当偏好命中但值未变化时，应标记 changed=false 并记录 before/after", () => {
    const provider = {
      id: 1,
      name: "codex-provider",
      providerType: "codex",
      codexParallelToolCallsPreference: "false",
    };

    const input: Record<string, unknown> = {
      model: "gpt-5-codex",
      input: [],
      parallel_tool_calls: false,
    };

    const result = applyCodexProviderOverridesWithAudit(provider as any, input);

    expect(result.audit?.hit).toBe(true);
    expect(result.audit?.changed).toBe(false);
    expect(result.audit?.providerId).toBe(1);
    expect(result.audit?.providerName).toBe("codex-provider");

    const parallelChange = result.audit?.changes.find((c) => c.path === "parallel_tool_calls");
    expect(parallelChange).toEqual({
      path: "parallel_tool_calls",
      before: false,
      after: false,
      changed: false,
    });
  });

  it("审计：当偏好命中且值变化时，应标记 changed=true 并记录变化明细", () => {
    const provider = {
      id: 2,
      name: "codex-provider",
      providerType: "codex",
      codexReasoningEffortPreference: "high",
      codexReasoningSummaryPreference: "detailed",
      codexTextVerbosityPreference: "high",
      codexParallelToolCallsPreference: "true",
    };

    const input: Record<string, unknown> = {
      model: "gpt-5-codex",
      input: [],
      parallel_tool_calls: false,
      reasoning: { effort: "low", summary: "auto" },
      text: { verbosity: "low" },
    };

    const result = applyCodexProviderOverridesWithAudit(provider as any, input);

    expect(result.audit?.hit).toBe(true);
    expect(result.audit?.changed).toBe(true);

    const changedPaths = (result.audit?.changes ?? []).filter((c) => c.changed).map((c) => c.path);
    expect(changedPaths).toEqual([
      "parallel_tool_calls",
      "reasoning.effort",
      "reasoning.summary",
      "text.verbosity",
    ]);
  });
});