/**
 * API Resources
 * Provides catalog of WMS APIs available
 */

function listResources() {
  return [
    {
      uri: 'api://catalog',
      name: 'API Catalog',
      description: 'Catalog of WMS APIs available with parameters and documentation',
      mimeType: 'text/markdown',
    },
  ];
}

async function readResource(uri) {
  let content;

  switch (uri) {
    case 'api://catalog':
      content = getAPICatalog();
      break;

    default:
      throw new Error(`Unknown API resource: ${uri}`);
  }

  return {
    contents: [{
      uri,
      mimeType: 'text/markdown',
      text: content,
    }],
  };
}

function getAPICatalog() {
  return `# WMS API Catalog

## Overview

The WMS provides several REST APIs for querying and modifying data.

**Base URL:** \`https://<host>/ApplicationService/api\` — built from the active
profile's host (see \`get_current_wms_profile\`).
**Authentication:** OAuth 2.0 Bearer Token (automatic)

The generated help page at \`https://<host>/ApplicationService/Help\` is the
authoritative reference for endpoints and fields.

---

## Query API

Execute LINQ queries against WMS entities.

**Endpoint:** \`/api/QueryExecute\`
**Method:** POST
**Authentication:** Required

### Request Format

\`\`\`json
{
  "Application": "EasyWMS",
  "QueryType": 0,
  "Expression": "Context.Products.Where(z => z.Code == \\"X\\").OrderBy(z => z.Id)",
  "Take": 100
}
\`\`\`

Rules (see the query tools for details):

- **\`QueryType: 0\` (Reading) is the default** — status fields are strings
  (\`"Release"\`). \`QueryType: 1\` (Writing) exists but status fields become
  enums there: string comparisons fail. Old examples using \`1\` must not be
  copied. The query tools expose this as the opt-in \`query_type\` parameter.
- **\`Where\` and \`OrderBy\` go in the Expression; \`Take\`/\`Skip\` are API
  parameters.** \`OrderBy\` is mandatory as soon as \`Take\` is used.
- **No \`Select\` projections** — the \`Select\` parameter causes server-side
  compile errors. Query full rows.
- **No relative dates** (\`DateTime.Now\`, \`AddDays()\`) — write literal dates:
  \`new DateTime(2026, 8, 1)\`.

### Entity Types

Common entities: Products, Containers, Stocks, ProductLocations, Tasks,
Accounts, Suppliers, Kits, Alias (invariant — no plural form), InboundOrders,
Receptions, OutboundOrders.

**The authoritative list (288 entities) comes from \`get_entity_metadata\`**
(Metadata API) — entity names are resolved case-insensitively from the AD name
(Container) or the TableName (Containers).

### Example Expressions

\`\`\`
# Filter + mandatory OrderBy (Take passed as API parameter, not in the expression)
Context.Products.Where(z => z.Code.Contains("ABC")).OrderBy(z => z.Id)

# Status comparison — strings in Reading (QueryType 0)
Context.OutboundOrders.Where(z => z.OutboundOrderStatus == "Release").OrderBy(z => z.Id)
\`\`\`

### Counting

**Endpoint:** \`/api/QueryScalarExecute\` — same body, expression ends with
\`.Count()\` / \`.Sum(...)\`. Prefer the \`count_wms_entities\` tool for any
"how many" question.

### MCP Tools

\`query_wms_entities\`, \`count_wms_entities\`, \`call_query_api\`,
\`get_entity_schema\`, \`search_wms_data\`.

---

## Command API

Execute commands to modify WMS data.

**Endpoint:** \`/api/CommandExecute\`
**Method:** POST
**Authentication:** Required

### Request Format

\`\`\`json
[
  {
    "Name": "Mecalux.ITSW.EasyWMS.Modules.MasterData.Contracts.Commands.ProductRemoveCommand",
    "Properties": {
      "Id": "product-guid-here"
    }
  }
]
\`\`\`

**\`Name\` is the \`InternalCommandName\` from the Application Dictionary, used
as-is.** Never append an assembly suffix (\`, Mecalux.ITSW...Contracts\`) — it
causes a \`FileLoadException\`. Retrieve the exact name via
\`get_ad_element_details\` before executing.

### MCP Tool

Use \`execute_command\` tool to execute commands.

**⚠️ WARNING:** Commands modify data. Use with caution.

---

## Workflow API (Application Dictionary)

Retrieve workflow definitions by application.

**Endpoint:** \`/AD/api/Workflow/GetByApplication\`
**Method:** POST
**Authentication:** Required

### Request Format

\`\`\`json
["EasyWMS", "<tenant>", 5000, 0]
\`\`\`

Parameters (positional): application name, tenant code, page size, offset.

### Response

An envelope object \`{ "entities": [...] }\` — **not** a bare array. Each
workflow object carries lowercase keys: \`id\`, \`name\`, \`version\`,
\`applicationName\`, \`commonInfo\` (createdBy, createDate, updateDate). There
is no category, code or description field.

### MCP Tools

- \`search_workflows\` - Search by name
- \`get_workflow_details\` - Get full workflow definition
- \`list_workflow_categories\` - List applications (workflows have no category field)

---

## Authentication

All APIs use OAuth 2.0 authentication.

**Token Endpoint:** \`/EasySTS/OAuth/Token\`
**Grant Types:** password, refresh_token (\`tenant_code\` is mandatory)

### Token Management

- Tokens expire after ~1200 seconds
- Automatic refresh when < 1000 seconds remaining
- Credentials come from the active profile (multi-profile \`.env\`)

The MCP server handles authentication automatically.

---

## Error Handling

### HTTP Status Codes

- \`200\` - Success
- \`400\` - Bad request (invalid query/command)
- \`401\` - Unauthorized (token expired or invalid)
- \`403\` - Forbidden (insufficient permissions)
- \`500\` - Internal server error (incl. LINQ compile errors)

The response body of a 500 carries the real diagnostic (e.g. the compile
error naming the context) — MCP tools surface it in their error messages.

---

## Rate Limits and Constraints

- **Query Limit:** Maximum 1000 rows per query (configurable)
- **Query Timeout:** 30 seconds (configurable)
- **Workflow Cache:** 1 hour TTL (configurable)

---

**Note:** Use MCP tools to interact with these APIs. Direct API calls require proper authentication handling.
`;
}

module.exports = {
  listResources,
  readResource,
};