import { Cli, z } from "incur";
import { fileURLToPath } from "node:url";
import { createInterface } from "node:readline/promises";

import { runDoctor } from "./application/Doctor.js";
import {
  runDirectAnalysis,
  runProviderAnalysis,
  runSessionStatus,
} from "./application/DirectAnalysis.js";
import { runSetup, type SetupAction } from "./application/Setup.js";
import { runUninstall } from "./application/Uninstall.js";
import { runUpgrade, systemUpgradeHost } from "./application/Upgrade.js";
import { PRODUCT_IDENTITY } from "./identity.js";
import { createLogger, parseLogLevel, type Logger } from "./logger.js";
import { logCliCommand } from "./cliLogging.js";
import { parseConfig } from "./config.js";
import { importReferenceSource } from "./application/ReferenceSourceImport.js";
import { registerEvidenceCommands } from "./cliEvidenceCommands.js";
import { registerProcessCommands } from "./cliProcessCommands.js";
import { registerInvestigationCommands } from "./cliInvestigationCommands.js";
import {
  AnalysisProtocolError,
  PermissionRequiredError,
  projectAnalysisError,
} from "./domain/errors.js";
import { projectReferenceSourceImportError } from "./application/ReferenceSourceImportTypes.js";
import { loadConfiguredPermissionAuthority } from "./application/PermissionConfiguration.js";
import { registerPolicyCommands } from "./cliPolicyCommands.js";
import { registerBrowserCommands } from "./cliBrowserCommands.js";
import { registerAdvancedBrowserCommands } from "./cliBrowserAdvancedCommands.js";
import { registerElectronCommands } from "./cliElectronCommands.js";

/**
 * Build the one-shot Incur CLI without starting Hopper at import time.
 * Analysis commands acquire and close their own sessions; bare `mcp` and
 * `--mcp` are intercepted by the executable dispatcher before this module loads.
 */
export const createCli = (): ReturnType<typeof Cli.create> => {
  const logger = createLogger(
    "cli",
    process.env.REA_LOG_LEVEL === undefined
      ? "silent"
      : parseLogLevel(process.env.REA_LOG_LEVEL),
  );
  const cli = Cli.create(PRODUCT_IDENTITY.cliBinary, {
    version: PRODUCT_IDENTITY.packageVersion,
    description: "Reverse engineer anything from your terminal or agent.",
    mcp: {
      command: PRODUCT_IDENTITY.mcpCommand,
      instructions:
        "Ask what software, artifact, protocol, or behavior the user wants to understand, then choose the available investigation capabilities that can produce evidence.",
    },
    sync: {
      cwd: fileURLToPath(new URL("..", import.meta.url)),
      include: ["skills/*"],
      suggestions: [
        "understand how a software feature works",
        "investigate an artifact or observed behavior",
        "check my REA setup",
      ],
    },
  });

  registerSetupCommands(cli, logger);
  registerCoreCommands(cli, logger);
  registerFunctionCommand(cli, logger);
  registerSearchCommand(cli, logger);
  registerXrefsCommand(cli, logger);
  registerTraceCommand(cli, logger);
  registerCapabilityCommands(cli, logger);
  registerNativeCommands(cli, logger);
  registerArtifactCommands(cli, logger);
  registerInvestigationCommands(cli, logger);
  registerEvidenceCommands(cli, logger);
  registerReferenceSourceCommand(cli, logger);
  registerProcessCommands(cli, logger);
  registerPolicyCommands(cli, logger);
  registerBrowserCommands(cli, logger);
  registerAdvancedBrowserCommands(cli, logger);
  registerElectronCommands(cli, logger);
  return cli;
};

const registerCoreCommands = (
  cli: ReturnType<typeof Cli.create>,
  logger: Logger,
): void => {
  const overviewOptions = z.object({
    detail: z.enum(["concise", "detailed"]).default("concise"),
    limit: z.number().int().min(1).max(50).default(10),
    snapshot: z
      .string()
      .min(1)
      .optional()
      .describe("Load and update a local analysis snapshot"),
  });
  cli.command("analyze", {
    description: "Get an overview of an app",
    args: z.object({
      path: z.string().describe("App, program, or Hopper database path"),
    }),
    options: overviewOptions,
    run: ({ args, options }) =>
      logCliCommand(logger, "analyze", () =>
        runDirectAnalysis(
          args.path,
          "binary_overview",
          { detail: options.detail, limit: options.limit },
          { logger, snapshotPath: options.snapshot },
        ),
      ),
  });
  cli.command("inspect", {
    description: "Inspect an app overview with evidence",
    args: z.object({
      path: z.string().describe("App, program, or Hopper database path"),
    }),
    options: overviewOptions,
    run: ({ args, options }) =>
      logCliCommand(logger, "inspect", () =>
        runDirectAnalysis(
          args.path,
          "binary_overview",
          { detail: options.detail, limit: options.limit },
          { logger, snapshotPath: options.snapshot },
        ),
      ),
  });
  cli.command("decompile", {
    description: "Read one part of an app as code",
    args: z.object({
      path: z.string().describe("App or program path"),
      address: z.string().describe("Procedure address"),
    }),
    options: z.object({ snapshot: z.string().min(1).optional() }),
    run: ({ args, options }) =>
      logCliCommand(logger, "decompile", () =>
        runDirectAnalysis(
          args.path,
          "procedure_pseudo_code",
          { procedure: args.address },
          { logger, snapshotPath: options.snapshot },
        ),
      ),
  });
};

const registerSetupCommands = (
  cli: ReturnType<typeof Cli.create>,
  logger: Logger,
): void => {
  cli.command("setup", {
    description: "Install requirements and configure agents",
    options: z.object({
      yes: z
        .boolean()
        .default(false)
        .describe("Approve user-owned setup actions without prompting"),
      installHopper: z
        .boolean()
        .default(false)
        .describe("Also approve Hopper installation with --yes"),
    }),
    alias: { yes: "y", installHopper: "install-hopper" },
    run: ({ options, formatExplicit }) =>
      logCliCommand(logger, "setup", () =>
        runSetup(
          {
            approved: options.yes,
            installHopper: options.installHopper,
            structured: formatExplicit,
          },
          undefined,
          options.yes || formatExplicit || process.stdin.isTTY !== true
            ? undefined
            : confirmSetup,
        ),
      ),
  });
  cli.command("doctor", {
    description: "Check whether REA is ready",
    options: z.object({
      target: z.string().optional().describe("Optional app path to check"),
    }),
    run: ({ options }) =>
      logCliCommand(logger, "doctor", () => runDoctor(options.target)),
  });
  cli.command("uninstall", {
    description: "Remove REA-owned agent configuration and skill files",
    options: z.object({
      purgeData: z
        .boolean()
        .default(false)
        .describe("Also remove REA caches and state"),
    }),
    alias: { purgeData: "purge-data" },
    run: ({ options }) =>
      logCliCommand(logger, "uninstall", () => runUninstall(options.purgeData)),
  });
  cli.command("upgrade", {
    description: "Upgrade a global npm installation to the latest REA release",
    run: ({ formatExplicit }) =>
      logCliCommand(logger, "upgrade", () =>
        runUpgrade(
          PRODUCT_IDENTITY.packageVersion,
          systemUpgradeHost(),
          formatExplicit ? "structured" : "human",
        ),
      ),
  });
};

const confirmSetup = async (
  actions: readonly SetupAction[],
): Promise<boolean> => {
  process.stdout.write("\nREA setup plan\n");
  for (const action of actions)
    process.stdout.write(
      `  - ${action.detail}\n    ${action.target}${action.external ? " (external software)" : ""}\n`,
    );
  const prompt = createInterface({
    input: process.stdin,
    output: process.stdout,
  });
  try {
    const answer = (await prompt.question("Continue? [Y/n] "))
      .trim()
      .toLowerCase();
    return answer === "" || answer === "y" || answer === "yes";
  } finally {
    prompt.close();
  }
};

const registerXrefsCommand = (
  cli: ReturnType<typeof Cli.create>,
  logger: Logger,
): void => {
  cli.command("xrefs", {
    description: "List bounded references to an analyzed address",
    args: z.object({
      path: z.string().describe("App or program path"),
      address: z.string().describe("Hexadecimal address"),
    }),
    options: z.object({ snapshot: z.string().min(1).optional() }),
    run: ({ args, options }) =>
      logCliCommand(logger, "xrefs", () =>
        runDirectAnalysis(
          args.path,
          "xrefs",
          { address: args.address },
          { logger, snapshotPath: options.snapshot },
        ),
      ),
  });
};

const registerTraceCommand = (
  cli: ReturnType<typeof Cli.create>,
  logger: Logger,
): void => {
  cli.command("trace", {
    description: "Trace a bounded literal feature through analyzed references",
    args: z.object({
      path: z.string().describe("App or program path"),
      query: z.string().min(1).describe("Literal feature query"),
    }),
    options: z.object({
      caseSensitive: z.boolean().default(false),
      limit: z.number().int().min(1).max(100).default(20),
      maxOperations: z.number().int().min(1).max(100).default(20),
      snapshot: z.string().min(1).optional(),
    }),
    alias: {
      caseSensitive: "case-sensitive",
      maxOperations: "max-operations",
    },
    run: ({ args, options }) =>
      logCliCommand(logger, "trace", () =>
        runDirectAnalysis(
          args.path,
          "trace_feature",
          {
            query: args.query,
            case_sensitive: options.caseSensitive,
            limit: options.limit,
            max_operations: options.maxOperations,
          },
          { logger, snapshotPath: options.snapshot },
        ),
      ),
  });
};

const registerCapabilityCommands = (
  cli: ReturnType<typeof Cli.create>,
  logger: Logger,
): void => {
  for (const command of ["capabilities", "providers"] as const) {
    cli.command(command, {
      description:
        command === "capabilities"
          ? "List provider capabilities and side effects"
          : "List configured analysis providers",
      run: () => logCliCommand(logger, command, () => runSessionStatus(logger)),
    });
  }
};

const registerFunctionCommand = (
  cli: ReturnType<typeof Cli.create>,
  logger: Logger,
): void => {
  cli.command("function", {
    description: "Analyze one bounded function with evidence",
    args: z.object({
      path: z.string().describe("App or program path"),
      address: z.string().describe("Procedure name or address"),
    }),
    options: z.object({
      includeAssembly: z.boolean().default(false),
      limit: z.number().int().min(1).max(500).default(100),
      maxPseudocodeChars: z.number().int().min(1).max(100_000).default(20_000),
      maxInstructions: z.number().int().min(1).max(5_000).default(500),
      snapshot: z.string().min(1).optional(),
    }),
    alias: {
      includeAssembly: "include-assembly",
      maxPseudocodeChars: "max-pseudocode-chars",
      maxInstructions: "max-instructions",
    },
    run: ({ args, options }) =>
      logCliCommand(logger, "function", () =>
        runDirectAnalysis(
          args.path,
          "analyze_function",
          {
            procedure: args.address,
            include_assembly: options.includeAssembly,
            limit: options.limit,
            max_pseudocode_chars: options.maxPseudocodeChars,
            max_instructions: options.maxInstructions,
          },
          { logger, snapshotPath: options.snapshot },
        ),
      ),
  });
};

const registerSearchCommand = (
  cli: ReturnType<typeof Cli.create>,
  logger: Logger,
): void => {
  cli.command("search", {
    description: "Search bounded analyzed strings or procedure names",
    args: z.object({
      path: z.string().describe("App or program path"),
      pattern: z.string().min(1).describe("Literal text or regex pattern"),
    }),
    options: z.object({
      kind: z.enum(["strings", "procedures"]).default("strings"),
      mode: z.enum(["literal", "regex"]).default("literal"),
      caseSensitive: z.boolean().default(false),
      offset: z.number().int().min(0).default(0),
      limit: z.number().int().min(1).max(100).default(100),
      snapshot: z.string().min(1).optional(),
    }),
    alias: { caseSensitive: "case-sensitive" },
    run: ({ args, options }) =>
      logCliCommand(logger, "search", () =>
        runDirectAnalysis(
          args.path,
          options.kind === "strings" ? "search_strings" : "search_procedures",
          {
            pattern: args.pattern,
            mode: options.mode,
            case_sensitive: options.caseSensitive,
            offset: options.offset,
            limit: options.limit,
          },
          { logger, snapshotPath: options.snapshot },
        ),
      ),
  });
};

const registerReferenceSourceCommand = (
  cli: ReturnType<typeof Cli.create>,
  logger: Logger,
): void => {
  cli.command("import-reference-source", {
    description: "Import a bounded source tree as historical reference only",
    args: z.object({
      root: z
        .string()
        .describe("Source root allowed by REA_REFERENCE_ROOTS_JSON"),
    }),
    run: ({ args }) =>
      logCliCommand(logger, "import-reference-source", async () => {
        const config = parseConfig(process.env);
        if (!config.ok)
          return {
            error: "Import failed",
            ...projectAnalysisError(config.error),
          };
        const authority = await loadConfiguredPermissionAuthority(config.value);
        if (!authority.ok)
          return {
            error: "Import failed",
            ...projectAnalysisError(authority.error),
          };
        const authorized = await authority.value.authorize(
          {
            capability: "reference_read",
            roots: [args.root],
            executables: [],
            environment_names: [],
            network: "none",
            mount: false,
            operation_identity: `import_reference_source:${args.root}`,
          },
          "read",
        );
        if (!authorized.ok) {
          const error =
            authorized.error instanceof PermissionRequiredError
              ? authorized.error
              : new AnalysisProtocolError(authorized.error.message, {
                  cause: authorized.error,
                });
          return {
            error: "Import failed",
            ...projectAnalysisError(error),
          };
        }
        const imported = await importReferenceSource({
          root: args.root,
          caller: "rea-cli",
          policy: config.value.referenceSourcePolicy,
          importer: PRODUCT_IDENTITY.packageName,
          importerVersion: null,
        });
        return imported.ok
          ? imported.value
          : {
              error: "Import failed",
              ...projectReferenceSourceImportError(imported.error),
            };
      }),
  });
};

const registerArtifactCommands = (
  cli: ReturnType<typeof Cli.create>,
  logger: Logger,
): void => {
  cli.command("inventory-artifact", {
    description: "Build a bounded deterministic artifact graph",
    args: z.object({
      path: z.string().describe("Application or package path"),
    }),
    options: z.object({
      offset: z.number().int().min(0).default(0),
      limit: z.number().int().min(1).max(500).default(100),
      integrityPolicy: z.enum(["fail", "record-and-continue"]).default("fail"),
      integrityContinueApproved: z.boolean().default(false),
      maxIntegrityMismatches: z.number().int().min(1).max(100).default(10),
      nativeMountApproved: z.boolean().default(false),
    }),
    alias: {
      integrityPolicy: "integrity-policy",
      integrityContinueApproved: "integrity-continue-approved",
      maxIntegrityMismatches: "max-integrity-mismatches",
      nativeMountApproved: "native-mount-approved",
    },
    run: ({ args, options }) =>
      logCliCommand(logger, "inventory-artifact", () =>
        runProviderAnalysis(
          args.path,
          "inventory_artifact",
          {
            node_offset: options.offset,
            node_limit: options.limit,
            occurrence_offset: options.offset,
            occurrence_limit: options.limit,
            edge_offset: options.offset,
            edge_limit: options.limit,
            integrity_policy: options.integrityPolicy,
            integrity_continue_approved: options.integrityContinueApproved,
            max_integrity_mismatches: options.maxIntegrityMismatches,
            native_mount_approved: options.nativeMountApproved,
          },
          logger,
        ),
      ),
  });
  cli.command("extract-artifact", {
    description: "Extract explicitly selected artifact occurrences safely",
    args: z.object({
      path: z.string().describe("Application or package path"),
      outputRoot: z.string().describe("Absent absolute output root"),
      occurrenceIds: z
        .array(z.string().regex(/^occ_[a-f0-9]{64}$/u))
        .min(1)
        .max(500),
    }),
    alias: { outputRoot: "output-root", occurrenceIds: "occurrence-ids" },
    run: ({ args }) =>
      logCliCommand(logger, "extract-artifact", () =>
        runProviderAnalysis(
          args.path,
          "extract_artifact",
          {
            approved: true,
            output_root: args.outputRoot,
            occurrence_ids: args.occurrenceIds,
          },
          logger,
        ),
      ),
  });
};

const registerNativeCommands = (
  cli: ReturnType<typeof Cli.create>,
  logger: Logger,
): void => {
  for (const [command, tool] of [
    ["inspect-macho", "inspect_macho"],
    ["inspect-signature", "inspect_signature"],
    ["list-architectures", "list_architectures"],
  ] as const) {
    cli.command(command, {
      description: `Run ${tool} without launching Hopper`,
      args: z.object({ path: z.string().describe("Mach-O or app path") }),
      run: ({ args }) =>
        logCliCommand(logger, command, () =>
          runProviderAnalysis(args.path, tool, {}, logger),
        ),
    });
  }
  cli.command("inspect-plist", {
    description: "Parse app plist metadata without launching Hopper",
    args: z.object({ path: z.string().describe("App or Mach-O path") }),
    options: z.object({
      relativePath: z.string().default("Contents/Info.plist"),
    }),
    alias: { relativePath: "relative-path" },
    run: ({ args, options }) =>
      logCliCommand(logger, "inspect-plist", () =>
        runProviderAnalysis(
          args.path,
          "inspect_plist",
          { relative_path: options.relativePath },
          logger,
        ),
      ),
  });
  cli.command("demangle-swift", {
    description: "Demangle a bounded Swift symbol batch without Hopper",
    args: z.object({
      path: z.string().describe("Artifact path used for evidence identity"),
      symbols: z.array(z.string().min(1)).min(1).max(500),
    }),
    run: ({ args }) =>
      logCliCommand(logger, "demangle-swift", () =>
        runProviderAnalysis(
          args.path,
          "demangle_swift",
          { symbols: args.symbols },
          logger,
        ),
      ),
  });
};