/**
 * Unit tests for plugin loader module
 */
import { describe, it, expect, beforeEach, afterEach } from "vitest";
import { tmpdir } from "os";
import { join } from "path";
import { mkdir, rm, writeFile } from "fs/promises";
import { loadPlugins, executePluginDirect, PluginRegistry } from "./loader.js";
import { isValidManifest, validateManifest } from "./types.js";
describe("PluginRegistry", () => {
    it("creates an empty registry", () => {
        const registry = new PluginRegistry("/test/path");
        expect(registry.getAll()).toHaveLength(0);
        expect(registry.getEnabled()).toHaveLength(0);
        expect(registry.getEntries()).toHaveLength(0);
    });
    it("adds and retrieves plugins", () => {
        const registry = new PluginRegistry("/test/path");
        const plugin = createMockPlugin("test-scanner");
        registry.add(plugin);
        expect(registry.has("test-scanner")).toBe(true);
        expect(registry.get("test-scanner")).toBe(plugin);
        expect(registry.getAll()).toHaveLength(1);
    });
    it("returns undefined for non-existent plugin", () => {
        const registry = new PluginRegistry("/test/path");
        expect(registry.get("non-existent")).toBeUndefined();
        expect(registry.has("non-existent")).toBe(false);
    });
    it("getEnabled filters out disabled and errored plugins", () => {
        const registry = new PluginRegistry("/test/path");
        registry.add(createMockPlugin("enabled-1", true));
        registry.add(createMockPlugin("enabled-2", true));
        registry.add(createMockPlugin("disabled", false));
        registry.add(createMockPlugin("errored", true, "Load error"));
        expect(registry.getAll()).toHaveLength(4);
        expect(registry.getEnabled()).toHaveLength(2);
        expect(registry.getEnabled().map((p) => p.manifest.name)).toEqual(["enabled-1", "enabled-2"]);
    });
    it("removes plugins", () => {
        const registry = new PluginRegistry("/test/path");
        registry.add(createMockPlugin("to-remove"));
        registry.add(createMockPlugin("to-keep"));
        const removed = registry.remove("to-remove");
        expect(removed).toBe(true);
        expect(registry.has("to-remove")).toBe(false);
        expect(registry.has("to-keep")).toBe(true);
    });
    it("returns false when removing non-existent plugin", () => {
        const registry = new PluginRegistry("/test/path");
        expect(registry.remove("non-existent")).toBe(false);
    });
    it("clears all plugins", () => {
        const registry = new PluginRegistry("/test/path");
        registry.add(createMockPlugin("plugin-1"));
        registry.add(createMockPlugin("plugin-2"));
        registry.clear();
        expect(registry.getAll()).toHaveLength(0);
        expect(registry.has("plugin-1")).toBe(false);
    });
    it("getEntries returns registry entries", () => {
        const registry = new PluginRegistry("/test/path");
        registry.add(createMockPlugin("scanner-a", true));
        registry.add(createMockPlugin("scanner-b", true, "Error message"));
        const entries = registry.getEntries();
        expect(entries).toHaveLength(2);
        expect(entries[0].name).toBe("scanner-a");
        expect(entries[0].loaded).toBe(true);
        expect(entries[0].source).toBe("local");
        expect(entries[1].name).toBe("scanner-b");
        expect(entries[1].loaded).toBe(false);
        expect(entries[1].error).toBe("Error message");
    });
});
describe("loadPlugins", () => {
    let testDir;
    beforeEach(async () => {
        testDir = join(tmpdir(), `vaspera-plugin-test-${Date.now()}-${Math.random().toString(36).slice(2)}`);
        await mkdir(testDir, { recursive: true });
    });
    afterEach(async () => {
        await rm(testDir, { recursive: true, force: true });
    });
    it("returns empty registry when no plugins exist", async () => {
        const registry = await loadPlugins(testDir);
        expect(registry.getAll()).toHaveLength(0);
    });
    it("discovers local plugins", async () => {
        // Create plugin structure
        const pluginDir = join(testDir, ".vaspera", "plugins", "test-plugin");
        await mkdir(pluginDir, { recursive: true });
        const manifest = createValidManifest("test-plugin");
        await writeFile(join(pluginDir, "manifest.json"), JSON.stringify(manifest));
        // Create a dummy scanner module
        await writeFile(join(pluginDir, "scanner.js"), `export default async function(ctx) { return { scanner: "test", findings: [], duration: 0, success: true }; }`);
        const registry = await loadPlugins(testDir);
        // The plugin may fail to load due to module resolution, but discovery works
        expect(registry.getAll().length).toBeGreaterThanOrEqual(0);
    });
    it("skips directories without manifest.json", async () => {
        const pluginDir = join(testDir, ".vaspera", "plugins", "invalid-plugin");
        await mkdir(pluginDir, { recursive: true });
        // No manifest.json created
        const registry = await loadPlugins(testDir);
        expect(registry.has("invalid-plugin")).toBe(false);
    });
    it("respects skip option", async () => {
        const plugin1Dir = join(testDir, ".vaspera", "plugins", "plugin-a");
        const plugin2Dir = join(testDir, ".vaspera", "plugins", "plugin-b");
        await mkdir(plugin1Dir, { recursive: true });
        await mkdir(plugin2Dir, { recursive: true });
        await writeFile(join(plugin1Dir, "manifest.json"), JSON.stringify(createValidManifest("plugin-a")));
        await writeFile(join(plugin2Dir, "manifest.json"), JSON.stringify(createValidManifest("plugin-b")));
        // Create scanner modules
        const scannerCode = `export default async function(ctx) { return { scanner: "test", findings: [], duration: 0, success: true }; }`;
        await writeFile(join(plugin1Dir, "scanner.js"), scannerCode);
        await writeFile(join(plugin2Dir, "scanner.js"), scannerCode);
        const registry = await loadPlugins(testDir, { skip: ["plugin-a"] });
        expect(registry.has("plugin-a")).toBe(false);
    });
    it("respects only option", async () => {
        const plugin1Dir = join(testDir, ".vaspera", "plugins", "include-me");
        const plugin2Dir = join(testDir, ".vaspera", "plugins", "exclude-me");
        await mkdir(plugin1Dir, { recursive: true });
        await mkdir(plugin2Dir, { recursive: true });
        await writeFile(join(plugin1Dir, "manifest.json"), JSON.stringify(createValidManifest("include-me")));
        await writeFile(join(plugin2Dir, "manifest.json"), JSON.stringify(createValidManifest("exclude-me")));
        // Create scanner modules
        const scannerCode = `export default async function(ctx) { return { scanner: "test", findings: [], duration: 0, success: true }; }`;
        await writeFile(join(plugin1Dir, "scanner.js"), scannerCode);
        await writeFile(join(plugin2Dir, "scanner.js"), scannerCode);
        const registry = await loadPlugins(testDir, { only: ["include-me"] });
        expect(registry.has("exclude-me")).toBe(false);
    });
    it("respects loadLocal=false option", async () => {
        const pluginDir = join(testDir, ".vaspera", "plugins", "local-plugin");
        await mkdir(pluginDir, { recursive: true });
        await writeFile(join(pluginDir, "manifest.json"), JSON.stringify(createValidManifest("local-plugin")));
        await writeFile(join(pluginDir, "scanner.js"), `export default async () => ({});`);
        const registry = await loadPlugins(testDir, { loadLocal: false });
        expect(registry.has("local-plugin")).toBe(false);
    });
    it("handles invalid manifest gracefully", async () => {
        const pluginDir = join(testDir, ".vaspera", "plugins", "bad-manifest");
        await mkdir(pluginDir, { recursive: true });
        // Invalid manifest (missing required fields)
        await writeFile(join(pluginDir, "manifest.json"), JSON.stringify({ name: "bad" }));
        const registry = await loadPlugins(testDir);
        // Should either not load or load with error
        const plugin = registry.get("bad-manifest");
        if (plugin) {
            expect(plugin.loadError).toBeDefined();
        }
    });
    it("handles malformed JSON gracefully", async () => {
        const pluginDir = join(testDir, ".vaspera", "plugins", "malformed");
        await mkdir(pluginDir, { recursive: true });
        await writeFile(join(pluginDir, "manifest.json"), "{ invalid json }");
        // Should not throw
        await expect(loadPlugins(testDir)).resolves.toBeDefined();
    });
});
describe("executePluginDirect", () => {
    it("executes plugin and returns result", async () => {
        const plugin = createMockPlugin("direct-test", true, undefined, async () => ({
            scanner: "semgrep",
            findings: [{
                    scanner: "semgrep",
                    ruleId: "test-rule",
                    file: "a.js",
                    line: 1,
                    severity: "high",
                    message: "Test finding",
                    confidence: 90,
                }],
            duration: 100,
            success: true,
        }));
        const context = {
            projectPath: "/test",
            timeout: 5000,
            logger: createNoOpLogger(),
        };
        const result = await executePluginDirect(plugin, context);
        expect(result.plugin).toBe("direct-test");
        expect(result.sandboxed).toBe(false);
        expect(result.result.success).toBe(true);
        expect(result.result.findings).toHaveLength(1);
        expect(result.durationMs).toBeGreaterThanOrEqual(0);
    });
    it("handles plugin errors gracefully", async () => {
        const plugin = createMockPlugin("error-plugin", true, undefined, async () => {
            throw new Error("Scanner failed");
        });
        const context = {
            projectPath: "/test",
            timeout: 5000,
            logger: createNoOpLogger(),
        };
        const result = await executePluginDirect(plugin, context);
        expect(result.result.success).toBe(false);
        expect(result.error).toContain("Scanner failed");
        expect(result.result.findings).toHaveLength(0);
    });
    it("records duration correctly", async () => {
        const plugin = createMockPlugin("duration-test", true, undefined, async () => {
            await new Promise((r) => setTimeout(r, 50));
            return {
                scanner: "duration-test",
                findings: [],
                duration: 50,
                success: true,
            };
        });
        const context = {
            projectPath: "/test",
            timeout: 5000,
            logger: createNoOpLogger(),
        };
        const result = await executePluginDirect(plugin, context);
        expect(result.durationMs).toBeGreaterThanOrEqual(45); // Allow some variance
    });
});
describe("isValidManifest", () => {
    it("returns true for valid manifest", () => {
        const manifest = createValidManifest("valid-plugin");
        expect(isValidManifest(manifest)).toBe(true);
    });
    it("returns false for invalid manifest", () => {
        expect(isValidManifest({})).toBe(false);
        expect(isValidManifest({ name: "test" })).toBe(false);
        expect(isValidManifest(null)).toBe(false);
        expect(isValidManifest(undefined)).toBe(false);
        expect(isValidManifest("string")).toBe(false);
    });
    it("validates name format", () => {
        const manifest = createValidManifest("INVALID_NAME");
        expect(isValidManifest(manifest)).toBe(false);
        const validManifest = createValidManifest("valid-name-123");
        expect(isValidManifest(validManifest)).toBe(true);
    });
    it("validates version format", () => {
        const manifest = createValidManifest("test");
        manifest.version = "invalid";
        expect(isValidManifest(manifest)).toBe(false);
        manifest.version = "1.0.0";
        expect(isValidManifest(manifest)).toBe(true);
        manifest.version = "10.20.30-beta.1";
        expect(isValidManifest(manifest)).toBe(true);
    });
});
describe("validateManifest", () => {
    it("returns valid=true with manifest for valid input", () => {
        const input = createValidManifest("test-plugin");
        const result = validateManifest(input);
        expect(result.valid).toBe(true);
        expect(result.manifest).toBeDefined();
        expect(result.manifest?.name).toBe("test-plugin");
        expect(result.errors).toBeUndefined();
    });
    it("returns valid=false with errors for invalid input", () => {
        const result = validateManifest({ name: "INVALID" });
        expect(result.valid).toBe(false);
        expect(result.manifest).toBeUndefined();
        expect(result.errors).toBeDefined();
        expect(result.errors?.length).toBeGreaterThan(0);
    });
    it("returns specific error messages for each validation failure", () => {
        const result = validateManifest({
            name: "INVALID",
            version: "bad",
            description: "",
            scanner: {},
            entryPoint: {},
        });
        expect(result.valid).toBe(false);
        expect(result.errors?.some((e) => e.includes("name"))).toBe(true);
        expect(result.errors?.some((e) => e.includes("version"))).toBe(true);
    });
    it("applies default values for optional fields", () => {
        const input = createValidManifest("defaults-test");
        delete input.capabilities;
        const result = validateManifest(input);
        expect(result.valid).toBe(true);
        expect(result.manifest?.capabilities).toBeDefined();
        expect(result.manifest?.capabilities.sandboxable).toBe(true);
        expect(result.manifest?.capabilities.autofix).toBe(false);
    });
});
// Helper functions
function createMockPlugin(name, enabled = true, loadError, scanFn) {
    return {
        manifest: createValidManifest(name),
        path: `/mock/plugins/${name}`,
        source: "local",
        scan: scanFn || (async () => ({
            scanner: name,
            findings: [],
            duration: 0,
            success: true,
        })),
        enabled,
        loadError,
    };
}
function createValidManifest(name) {
    return {
        name,
        version: "1.0.0",
        description: `Test plugin: ${name}`,
        scanner: {
            type: "sast",
            languages: ["javascript", "typescript"],
            defaultTimeout: 60000,
            requiresBinary: false,
        },
        entryPoint: {
            module: "scanner.js",
            exportName: "default",
        },
        capabilities: {
            incremental: false,
            autofix: false,
            customRules: false,
            sandboxable: true,
        },
    };
}
function createNoOpLogger() {
    return {
        debug: () => { },
        info: () => { },
        warn: () => { },
        error: () => { },
    };
}
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