import type { ClawdbotConfig } from "../config/config.js";
import {
  CONFIG_PATH_CLAWDBOT,
  readConfigFileSnapshot,
  resolveGatewayPort,
  writeConfigFile,
} from "../config/config.js";
import { ensureControlUiAssetsBuilt } from "../infra/control-ui-assets.js";
import type { RuntimeEnv } from "../runtime.js";
import { defaultRuntime } from "../runtime.js";
import { note } from "../terminal/note.js";
import { resolveUserPath, sleep } from "../utils.js";
import { createClackPrompter } from "../wizard/clack-prompter.js";
import { WizardCancelledError } from "../wizard/prompts.js";
import { removeChannelConfigWizard } from "./configure.channels.js";
import { maybeInstallDaemon } from "./configure.daemon.js";
import { promptGatewayConfig } from "./configure.gateway.js";
import { promptAuthConfig } from "./configure.gateway-auth.js";
import type {
  ChannelsWizardMode,
  ConfigureWizardParams,
  WizardSection,
} from "./configure.shared.js";
import {
  CONFIGURE_SECTION_OPTIONS,
  intro,
  outro,
  select,
  text,
} from "./configure.shared.js";
import { healthCommand } from "./health.js";
import { formatHealthCheckFailure } from "./health-format.js";
import { setupChannels } from "./onboard-channels.js";
import {
  applyWizardMetadata,
  DEFAULT_WORKSPACE,
  ensureWorkspaceAndSessions,
  guardCancel,
  printWizardHeader,
  probeGatewayReachable,
  resolveControlUiLinks,
  summarizeExistingConfig,
} from "./onboard-helpers.js";
import { promptRemoteGatewayConfig } from "./onboard-remote.js";
import { setupSkills } from "./onboard-skills.js";

type ConfigureSectionChoice = WizardSection | "__continue";

async function promptConfigureSection(
  runtime: RuntimeEnv,
  hasSelection: boolean,
): Promise<ConfigureSectionChoice> {
  return guardCancel(
    await select<ConfigureSectionChoice>({
      message: "Select sections to configure",
      options: [
        ...CONFIGURE_SECTION_OPTIONS,
        {
          value: "__continue",
          label: "Continue",
          hint: hasSelection ? "Done" : "Skip for now",
        },
      ],
      initialValue: CONFIGURE_SECTION_OPTIONS[0]?.value,
    }),
    runtime,
  );
}

async function promptChannelMode(
  runtime: RuntimeEnv,
): Promise<ChannelsWizardMode> {
  return guardCancel(
    await select({
      message: "Channels",
      options: [
        {
          value: "configure",
          label: "Configure/link",
          hint: "Add/update channels; disable unselected accounts",
        },
        {
          value: "remove",
          label: "Remove channel config",
          hint: "Delete channel tokens/settings from clawdbot.json",
        },
      ],
      initialValue: "configure",
    }),
    runtime,
  ) as ChannelsWizardMode;
}

export async function runConfigureWizard(
  opts: ConfigureWizardParams,
  runtime: RuntimeEnv = defaultRuntime,
) {
  try {
    printWizardHeader(runtime);
    intro(
      opts.command === "update"
        ? "Clawdbot update wizard"
        : "Clawdbot configure",
    );
    const prompter = createClackPrompter();

    const snapshot = await readConfigFileSnapshot();
    const baseConfig: ClawdbotConfig = snapshot.valid ? snapshot.config : {};

    if (snapshot.exists) {
      const title = snapshot.valid
        ? "Existing config detected"
        : "Invalid config";
      note(summarizeExistingConfig(baseConfig), title);
      if (!snapshot.valid && snapshot.issues.length > 0) {
        note(
          [
            ...snapshot.issues.map((iss) => `- ${iss.path}: ${iss.message}`),
            "",
            "Docs: https://docs.clawd.bot/gateway/configuration",
          ].join("\n"),
          "Config issues",
        );
      }
      if (!snapshot.valid) {
        outro(
          "Config invalid. Run `clawdbot doctor` to repair it, then re-run configure.",
        );
        runtime.exit(1);
        return;
      }
    }

    const localUrl = "ws://127.0.0.1:18789";
    const localProbe = await probeGatewayReachable({
      url: localUrl,
      token:
        baseConfig.gateway?.auth?.token ?? process.env.CLAWDBOT_GATEWAY_TOKEN,
      password:
        baseConfig.gateway?.auth?.password ??
        process.env.CLAWDBOT_GATEWAY_PASSWORD,
    });
    const remoteUrl = baseConfig.gateway?.remote?.url?.trim() ?? "";
    const remoteProbe = remoteUrl
      ? await probeGatewayReachable({
          url: remoteUrl,
          token: baseConfig.gateway?.remote?.token,
        })
      : null;

    const mode = guardCancel(
      await select({
        message: "Where will the Gateway run?",
        options: [
          {
            value: "local",
            label: "Local (this machine)",
            hint: localProbe.ok
              ? `Gateway reachable (${localUrl})`
              : `No gateway detected (${localUrl})`,
          },
          {
            value: "remote",
            label: "Remote (info-only)",
            hint: !remoteUrl
              ? "No remote URL configured yet"
              : remoteProbe?.ok
                ? `Gateway reachable (${remoteUrl})`
                : `Configured but unreachable (${remoteUrl})`,
          },
        ],
      }),
      runtime,
    ) as "local" | "remote";

    if (mode === "remote") {
      let remoteConfig = await promptRemoteGatewayConfig(baseConfig, prompter);
      remoteConfig = applyWizardMetadata(remoteConfig, {
        command: opts.command,
        mode,
      });
      await writeConfigFile(remoteConfig);
      runtime.log(`Updated ${CONFIG_PATH_CLAWDBOT}`);
      outro("Remote gateway configured.");
      return;
    }

    let nextConfig = { ...baseConfig };
    let workspaceDir =
      nextConfig.agents?.defaults?.workspace ??
      baseConfig.agents?.defaults?.workspace ??
      DEFAULT_WORKSPACE;
    let gatewayPort = resolveGatewayPort(baseConfig);
    let gatewayToken: string | undefined =
      nextConfig.gateway?.auth?.token ??
      baseConfig.gateway?.auth?.token ??
      process.env.CLAWDBOT_GATEWAY_TOKEN;

    const persistConfig = async () => {
      nextConfig = applyWizardMetadata(nextConfig, {
        command: opts.command,
        mode,
      });
      await writeConfigFile(nextConfig);
      runtime.log(`Updated ${CONFIG_PATH_CLAWDBOT}`);
    };

    if (opts.sections) {
      const selected = opts.sections;
      if (!selected || selected.length === 0) {
        outro("No changes selected.");
        return;
      }

      if (selected.includes("workspace")) {
        const workspaceInput = guardCancel(
          await text({
            message: "Workspace directory",
            initialValue: workspaceDir,
          }),
          runtime,
        );
        workspaceDir = resolveUserPath(
          String(workspaceInput ?? "").trim() || DEFAULT_WORKSPACE,
        );
        nextConfig = {
          ...nextConfig,
          agents: {
            ...nextConfig.agents,
            defaults: {
              ...nextConfig.agents?.defaults,
              workspace: workspaceDir,
            },
          },
        };
        await ensureWorkspaceAndSessions(workspaceDir, runtime);
      }

      if (selected.includes("model")) {
        nextConfig = await promptAuthConfig(nextConfig, runtime, prompter);
      }

      if (selected.includes("gateway")) {
        const gateway = await promptGatewayConfig(nextConfig, runtime);
        nextConfig = gateway.config;
        gatewayPort = gateway.port;
        gatewayToken = gateway.token;
      }

      if (selected.includes("channels")) {
        const channelMode = await promptChannelMode(runtime);
        if (channelMode === "configure") {
          nextConfig = await setupChannels(nextConfig, runtime, prompter, {
            allowDisable: true,
            allowSignalInstall: true,
          });
        } else {
          nextConfig = await removeChannelConfigWizard(nextConfig, runtime);
        }
      }

      if (selected.includes("skills")) {
        const wsDir = resolveUserPath(workspaceDir);
        nextConfig = await setupSkills(nextConfig, wsDir, runtime, prompter);
      }

      await persistConfig();

      if (selected.includes("daemon")) {
        if (!selected.includes("gateway")) {
          const portInput = guardCancel(
            await text({
              message: "Gateway port for daemon install",
              initialValue: String(gatewayPort),
              validate: (value) =>
                Number.isFinite(Number(value)) ? undefined : "Invalid port",
            }),
            runtime,
          );
          gatewayPort = Number.parseInt(String(portInput), 10);
        }

        await maybeInstallDaemon({ runtime, port: gatewayPort, gatewayToken });
      }

      if (selected.includes("health")) {
        await sleep(1000);
        try {
          await healthCommand({ json: false, timeoutMs: 10_000 }, runtime);
        } catch (err) {
          runtime.error(formatHealthCheckFailure(err));
          note(
            [
              "Docs:",
              "https://docs.clawd.bot/gateway/health",
              "https://docs.clawd.bot/gateway/troubleshooting",
            ].join("\n"),
            "Health check help",
          );
        }
      }
    } else {
      let ranSection = false;
      let didConfigureGateway = false;

      while (true) {
        const choice = await promptConfigureSection(runtime, ranSection);
        if (choice === "__continue") break;
        ranSection = true;

        if (choice === "workspace") {
          const workspaceInput = guardCancel(
            await text({
              message: "Workspace directory",
              initialValue: workspaceDir,
            }),
            runtime,
          );
          workspaceDir = resolveUserPath(
            String(workspaceInput ?? "").trim() || DEFAULT_WORKSPACE,
          );
          nextConfig = {
            ...nextConfig,
            agents: {
              ...nextConfig.agents,
              defaults: {
                ...nextConfig.agents?.defaults,
                workspace: workspaceDir,
              },
            },
          };
          await ensureWorkspaceAndSessions(workspaceDir, runtime);
          await persistConfig();
        }

        if (choice === "model") {
          nextConfig = await promptAuthConfig(nextConfig, runtime, prompter);
          await persistConfig();
        }

        if (choice === "gateway") {
          const gateway = await promptGatewayConfig(nextConfig, runtime);
          nextConfig = gateway.config;
          gatewayPort = gateway.port;
          gatewayToken = gateway.token;
          didConfigureGateway = true;
          await persistConfig();
        }

        if (choice === "channels") {
          const channelMode = await promptChannelMode(runtime);
          if (channelMode === "configure") {
            nextConfig = await setupChannels(nextConfig, runtime, prompter, {
              allowDisable: true,
              allowSignalInstall: true,
            });
          } else {
            nextConfig = await removeChannelConfigWizard(nextConfig, runtime);
          }
          await persistConfig();
        }

        if (choice === "skills") {
          const wsDir = resolveUserPath(workspaceDir);
          nextConfig = await setupSkills(nextConfig, wsDir, runtime, prompter);
          await persistConfig();
        }

        if (choice === "daemon") {
          if (!didConfigureGateway) {
            const portInput = guardCancel(
              await text({
                message: "Gateway port for daemon install",
                initialValue: String(gatewayPort),
                validate: (value) =>
                  Number.isFinite(Number(value)) ? undefined : "Invalid port",
              }),
              runtime,
            );
            gatewayPort = Number.parseInt(String(portInput), 10);
          }
          await maybeInstallDaemon({
            runtime,
            port: gatewayPort,
            gatewayToken,
          });
        }

        if (choice === "health") {
          await sleep(1000);
          try {
            await healthCommand({ json: false, timeoutMs: 10_000 }, runtime);
          } catch (err) {
            runtime.error(formatHealthCheckFailure(err));
            note(
              [
                "Docs:",
                "https://docs.clawd.bot/gateway/health",
                "https://docs.clawd.bot/gateway/troubleshooting",
              ].join("\n"),
              "Health check help",
            );
          }
        }
      }

      if (!ranSection) {
        outro("No changes selected.");
        return;
      }
    }

    const controlUiAssets = await ensureControlUiAssetsBuilt(runtime);
    if (!controlUiAssets.ok && controlUiAssets.message) {
      runtime.error(controlUiAssets.message);
    }

    const bind = nextConfig.gateway?.bind ?? "loopback";
    const links = resolveControlUiLinks({
      bind,
      port: gatewayPort,
      customBindHost: nextConfig.gateway?.customBindHost,
      basePath: nextConfig.gateway?.controlUi?.basePath,
    });
    // Try both new and old passwords since gateway may still have old config.
    const newPassword =
      nextConfig.gateway?.auth?.password ??
      process.env.CLAWDBOT_GATEWAY_PASSWORD;
    const oldPassword =
      baseConfig.gateway?.auth?.password ??
      process.env.CLAWDBOT_GATEWAY_PASSWORD;
    const token =
      nextConfig.gateway?.auth?.token ?? process.env.CLAWDBOT_GATEWAY_TOKEN;

    let gatewayProbe = await probeGatewayReachable({
      url: links.wsUrl,
      token,
      password: newPassword,
    });
    // If new password failed and it's different from old password, try old too.
    if (!gatewayProbe.ok && newPassword !== oldPassword && oldPassword) {
      gatewayProbe = await probeGatewayReachable({
        url: links.wsUrl,
        token,
        password: oldPassword,
      });
    }
    const gatewayStatusLine = gatewayProbe.ok
      ? "Gateway: reachable"
      : `Gateway: not detected${gatewayProbe.detail ? ` (${gatewayProbe.detail})` : ""}`;

    note(
      [
        `Web UI: ${links.httpUrl}`,
        `Gateway WS: ${links.wsUrl}`,
        gatewayStatusLine,
        "Docs: https://docs.clawd.bot/web/control-ui",
      ].join("\n"),
      "Control UI",
    );

    outro("Configure complete.");
  } catch (err) {
    if (err instanceof WizardCancelledError) {
      runtime.exit(0);
      return;
    }
    throw err;
  }
}