/**
 * MUA — Mikes Unraid Agent
 * tools.ts — MCP Tool-Definitionen (22 Tools)
 *
 * Portiert von mcp/tools.php. Schema: unraid_<kategorie>_<aktion>
 * Kategorien: docker (14), network (6), system (2).
 */

import {
  containerRuntimeSummary,
  compactContainerInspect,
  dockerExec,
  sanitizeLogOutput,
  analyzeContainerLogs,
  runPhpHelper,
  compactNetworkInventory,
  hostState,
  auditAllTcpEndpoints,
  probeDualstack,
  connectionTest,
  validateName,
  runShell,
} from "./helpers";

export interface ToolDef {
  name: string;
  description: string;
  inputSchema: object;
  handler: (args: Record<string, unknown>) => Promise<string>;
}

const str = (desc: string) => ({ type: "string", description: desc });
const int = (desc: string) => ({ type: "integer", description: desc });
const num = (desc: string) => ({ type: "number", description: desc });
const bool = (desc: string) => ({ type: "boolean", description: desc });
const empty = { type: "object", properties: {}, additionalProperties: false } as const;

export const TOOLS: ToolDef[] = [
  // ── Docker (14) ───────────────────────────────────────────────────────
  {
    name: "unraid_docker_list",
    description:
      "List all Docker containers with runtime stats (CPU, memory, network I/O). Returns a compact JSON summary.",
    inputSchema: empty,
    handler: () => containerRuntimeSummary(),
  },
  {
    name: "unraid_docker_inspect",
    description:
      "Inspect a single Docker container in detail (state, image, ports, env, mounts).",
    inputSchema: {
      type: "object",
      properties: { container: str("Container name or ID") },
      required: ["container"],
    },
    handler: (a) => compactContainerInspect(validateName(a["container"], "container")),
  },
  {
    name: "unraid_docker_logs",
    description: "Get recent logs from a Docker container (with timestamps).",
    inputSchema: {
      type: "object",
      properties: {
        container: str("Container name or ID"),
        tail: int("Number of lines (1-2000, default 200)"),
      },
      required: ["container"],
    },
    handler: async (a) => {
      const container = validateName(a["container"], "container");
      const tail = Number(a["tail"] ?? 200);
      if (tail < 1 || tail > 2000) throw new Error("tail must be between 1 and 2000");
      const raw = await dockerExec(`logs --timestamps --tail ${tail} ${container}`, 60);
      return sanitizeLogOutput(raw);
    },
  },
  {
    name: "unraid_docker_analyze_logs",
    description:
      "Analyze container logs server-side for errors/warnings. Returns pattern counts and sample matches.",
    inputSchema: {
      type: "object",
      properties: {
        severity: {
          type: "string",
          enum: ["error", "warn", "info"],
          description: "Log severity to scan for",
        },
        container: str("Container name (optional, scans all running containers if omitted)"),
        since: str("Time filter (default 24h)"),
        scan_tail: int("Max lines to scan (default 1000)"),
        max_results: int("Max sample matches (default 50)"),
      },
      required: ["severity"],
    },
    handler: (a) => {
      const severity = (a["severity"] as string) ?? "error";
      const container = a["container"] as string | null | undefined;
      if (container !== undefined && container !== null && typeof container !== "string") {
        throw new Error("container must be a string");
      }
      const since = (a["since"] as string) ?? "24h";
      const scanTail = Number(a["scan_tail"] ?? 1000);
      const maxResults = Number(a["max_results"] ?? 50);
      return analyzeContainerLogs(severity, container ?? null, since, scanTail, maxResults);
    },
  },
  {
    name: "unraid_docker_processes",
    description: "List processes running inside a Docker container (docker top).",
    inputSchema: {
      type: "object",
      properties: { container: str("Container name or ID") },
      required: ["container"],
    },
    handler: (a) =>
      dockerExec(
        `top ${validateName(a["container"], "container")} -eo pid,ppid,user,stat,lstart,etime,args`,
      ),
  },
  {
    name: "unraid_docker_stats",
    description: "Get live CPU/memory/network/block I/O stats for all running containers.",
    inputSchema: empty,
    handler: () => dockerExec(`stats --no-stream --format '{{json .}}'`),
  },
  {
    name: "unraid_docker_info",
    description:
      "Get Docker daemon information (version, storage driver, container counts, etc.).",
    inputSchema: empty,
    handler: () => dockerExec(`info --format '{{json .}}'`),
  },
  {
    name: "unraid_docker_start",
    description: "Start a Docker container.",
    inputSchema: {
      type: "object",
      properties: { container: str("Container name or ID") },
      required: ["container"],
    },
    handler: (a) => dockerExec(`start ${validateName(a["container"], "container")}`),
  },
  {
    name: "unraid_docker_stop",
    description: "Stop a Docker container.",
    inputSchema: {
      type: "object",
      properties: { container: str("Container name or ID") },
      required: ["container"],
    },
    handler: (a) => dockerExec(`stop ${validateName(a["container"], "container")}`),
  },
  {
    name: "unraid_docker_restart",
    description: "Restart a Docker container.",
    inputSchema: {
      type: "object",
      properties: { container: str("Container name or ID") },
      required: ["container"],
    },
    handler: (a) => dockerExec(`restart ${validateName(a["container"], "container")}`),
  },
  {
    name: "unraid_docker_create",
    description: "Create a Docker container from a template (pulls image, creates container).",
    inputSchema: {
      type: "object",
      properties: {
        template_name: str('Template name (e.g. "linuxserver/sonarr")'),
      },
      required: ["template_name"],
    },
    handler: (a) => runPhpHelper("create", validateName(a["template_name"], "template_name")),
  },
  {
    name: "unraid_docker_modify",
    description:
      "Modify a container template (port, env, volume, network, privileged) and rebuild.",
    inputSchema: {
      type: "object",
      properties: {
        container: str("Container/template name"),
        field: {
          type: "string",
          enum: ["port", "env", "volume", "network", "privileged"],
        },
        value: str("New value (format depends on field)"),
      },
      required: ["container", "field", "value"],
    },
    handler: (a) => {
      const container = validateName(a["container"], "container");
      const field = (a["field"] as string) ?? "";
      const value = (a["value"] as string) ?? "";
      if (!["port", "env", "volume", "network", "privileged"].includes(field)) {
        throw new Error("field must be one of: port, env, volume, network, privileged");
      }
      return runPhpHelper("modify", container, field, value);
    },
  },
  {
    name: "unraid_docker_update",
    description: "Update a container (pull latest image, rebuild).",
    inputSchema: {
      type: "object",
      properties: { container: str("Container/template name") },
      required: ["container"],
    },
    handler: (a) => runPhpHelper("update", validateName(a["container"], "container")),
  },
  {
    name: "unraid_docker_rebuild",
    description:
      "Rebuild a container from its template (without pulling new image).",
    inputSchema: {
      type: "object",
      properties: { container: str("Container/template name") },
      required: ["container"],
    },
    handler: (a) => runPhpHelper("rebuild", validateName(a["container"], "container")),
  },

  // ── Netzwerk (6) ──────────────────────────────────────────────────────
  {
    name: "unraid_network_inventory",
    description: "Compact Docker network inventory (all networks with container counts).",
    inputSchema: empty,
    handler: () => compactNetworkInventory(),
  },
  {
    name: "unraid_network_list",
    description: "List all Docker networks.",
    inputSchema: empty,
    handler: () => dockerExec(`network ls --no-trunc --format '{{json .}}'`),
  },
  {
    name: "unraid_network_inspect",
    description: "Inspect a Docker network in detail.",
    inputSchema: {
      type: "object",
      properties: { network: str("Network name or ID") },
      required: ["network"],
    },
    handler: (a) => dockerExec(`network inspect -- ${validateName(a["network"], "network")}`),
  },
  {
    name: "unraid_network_host_state",
    description:
      "Get host network state (IPv4/IPv6 addresses, routes, listening sockets).",
    inputSchema: empty,
    handler: () => hostState(),
  },
  {
    name: "unraid_network_audit_tcp",
    description:
      "Audit all TCP endpoints: probe IPv4/IPv6 reachability for every published port. Returns classification (dualstack/ipv4-only/ipv6-only/unreachable).",
    inputSchema: {
      type: "object",
      properties: {
        timeout_seconds: num("Probe timeout (0.2-10, default 2)"),
        include_all_endpoints: bool("Include all endpoints (default false, only problems)"),
      },
    },
    handler: (a) => {
      const timeout = Number(a["timeout_seconds"] ?? 2);
      if (timeout < 0.2 || timeout > 10) {
        throw new Error("timeout_seconds must be between 0.2 and 10");
      }
      const includeAll = Boolean(a["include_all_endpoints"] ?? false);
      return auditAllTcpEndpoints(timeout, includeAll);
    },
  },
  {
    name: "unraid_network_lan_probe",
    description:
      "Probe a specific host:port for IPv4 and IPv6 reachability (dualstack test).",
    inputSchema: {
      type: "object",
      properties: {
        host: str("Hostname or IP"),
        port: int("Port (1-65535)"),
        timeout_seconds: num("Timeout (0.2-10, default 3)"),
      },
      required: ["host", "port"],
    },
    handler: (a) => {
      const host = validateName(a["host"], "host");
      const port = Number(a["port"] ?? 0);
      const timeout = Number(a["timeout_seconds"] ?? 3);
      if (port < 1 || port > 65535 || timeout < 0.2 || timeout > 10) {
        throw new Error("Invalid port or timeout");
      }
      return probeDualstack(host, port, timeout);
    },
  },

  // ── System (2) ────────────────────────────────────────────────────────
  {
    name: "unraid_system_connection_test",
    description:
      "Test connection to the Unraid host (hostname, kernel, Unraid version).",
    inputSchema: empty,
    handler: () => connectionTest(),
  },
  {
    name: "unraid_system_shell",
    description:
      "Execute a shell command on the Unraid host (as root, via /bin/sh -c) and return exit code, stdout, and stderr. Use for direct terminal access: file inspection, system commands, package info, log reading, etc. Commands run with a timeout and output is size-limited.",
    inputSchema: {
      type: "object",
      properties: {
        command: str(
          "Shell command to execute on the Unraid host (run via /bin/sh -c)",
        ),
        timeout_seconds: int("Timeout in seconds (1-300, default 60)"),
      },
      required: ["command"],
    },
    handler: (a) => {
      const command = (a["command"] as string) ?? "";
      if (command.trim() === "") throw new Error("command is required");
      const timeout = Number(a["timeout_seconds"] ?? 60);
      if (timeout < 1 || timeout > 300) {
        throw new Error("timeout_seconds must be between 1 and 300");
      }
      return runShell(command, timeout);
    },
  },
];

export function toolByName(name: string): ToolDef | undefined {
  return TOOLS.find((t) => t.name === name);
}