// ── Player · Rust ─────────────────────────────────────────────────────────
//
// Mounted at `/api/v1/player/rust`. The tier's gate is already applied: `player`
// sits behind `noindex, requireAuth`, so every handler here has a signed-in user
// and none of them re-implements that check.
//
// ── Why this tier exists in phase 1, and what it holds now ────────────────
//
// R14 puts this module on all three tiers from the start, and the loader holds
// `module.json`'s `mounts` against what is actually registered in **both**
// directions — a declared prefix that never gets a router fails the load. So the
// declaration and the registration land together or not at all.
//
// Phase 1 said this tier would carry the signed-in view of a server — the
// viewer's own linked Steam identity, their own presence, their own entitlements
// — and that identity was a later phase. This is that phase: `/links`, `/link`
// and `DELETE /links/:steamId` are R1, and everything phases 7 and 13 hand out is
// hung off the row they write.
//
// `/servers` stays what it was: the same list the public tier serves, answered on
// the authenticated tier so per-player detail can be added without moving the
// address. It delegates to the same model, so the two cannot drift.

const core = require('../../core')

const express = core.express
const { body, param } = core.validator

const rust = require('./rust.controller')
const { validate, rateLimit } = core.middleware

const playerRustRouter = express.Router()

// A Steam id as the game states it — `BasePlayer.UserIDString`, a 17-digit
// SteamID64. Bounded rather than pinned at 17 because the column is a string and
// a test rig's ids are shorter; what matters is that nothing but digits reaches a
// `WHERE steam_id = ?`.
const STEAM_ID_RE = /^[0-9]{5,32}$/

/**
 * R1 requires the link code be rate-limited, and this is where that lands.
 *
 * The code is six characters from a 32-glyph alphabet, so guessing one is a
 * 1-in-10⁹ shot — but only while the guesser is made to pay for each attempt.
 * Ten per quarter-hour per IP turns that into centuries; without it a script
 * could work through the space in an afternoon, and phases 7 and 13 make the
 * prize a set of in-game permissions and entitlements rather than a cosmetic
 * badge.
 *
 * Its own limiter rather than core's `accountChangeLimiter`: this is guessing
 * somebody else's secret, not changing your own password, and sharing a counter
 * would mean one of the two silently sets the policy for the other.
 */
const linkLimiter = rateLimit({
  windowMs: 15 * 60 * 1000,
  max: 10,
  label: 'rust-link-code',
  message: 'Too many link attempts. Please try again later.',
})

playerRustRouter.get(
  '/servers',
  // #swagger.tags = ['Player · Rust']
  // #swagger.summary = 'The Rust servers, for a signed-in player'
  // #swagger.description = 'The same servers the public list carries, answered on the authenticated tier. It is the address a signed-in client calls, so that per-player detail can be added here without moving it. Requires a session.'
  /* #swagger.responses[200] = { description: 'The server list', content: { "application/json": { schema: { $ref: "#/components/schemas/RustServerList" } } } } */
  rust.listServers,
)

playerRustRouter.get(
  '/links',
  // #swagger.tags = ['Player · Rust']
  // #swagger.summary = 'The Steam accounts the caller has linked'
  // #swagger.description = 'Every Steam account linked to the signed-in user, newest first. A link is fleet-wide: it is keyed by Steam id, not by server, because a Steam account is one person across every server an operator runs.'
  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
  /* #swagger.responses[200] = { description: 'Linked accounts', content: { "application/json": { schema: { $ref: "#/components/schemas/RustLinkList" } } } } */
  rust.listLinks,
)

playerRustRouter.post(
  '/link',
  // #swagger.tags = ['Player · Rust']
  // #swagger.summary = 'Link a Steam account with a one-time code from /link in game'
  // #swagger.description = 'The player types /link in game, the plugin hands them a six-character code privately, and they enter it here within five minutes. The site asks each configured server in turn until one recognises the code. A Steam account already linked to a different website account is refused rather than moved — the way out is /unlink in game.'
  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
  /* #swagger.requestBody = { required: true, content: { "application/json": { schema: { $ref: "#/components/schemas/RustLinkRequest" } } } } */
  /* #swagger.responses[200] = { description: 'Linked', content: { "application/json": { schema: { $ref: "#/components/schemas/RustLinkResult" } } } } */
  /* #swagger.responses[400] = { description: 'Unknown or expired code', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
  /* #swagger.responses[409] = { description: 'That Steam account is linked to another website account', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
  /* #swagger.responses[429] = { description: 'Too many link attempts', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
  /* #swagger.responses[503] = { description: 'A server could not be reached — the code is still good', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
  linkLimiter,
  body('code').isString().trim().isLength({ min: 4, max: 32 }),
  validate,
  rust.confirmLink,
)

playerRustRouter.delete(
  '/links/:steamId',
  // #swagger.tags = ['Player · Rust']
  // #swagger.summary = 'Release a Steam account the caller has linked'
  // #swagger.description = 'Removes the caller’s own link. Scoped to the caller in the statement, so a link belonging to somebody else answers the same 404 as one that does not exist.'
  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
  // #swagger.parameters['steamId'] = { in: 'path', required: true, schema: { type: 'string' }, description: 'The Steam id to release.' }
  /* #swagger.responses[200] = { description: 'Unlinked', content: { "application/json": { schema: { type: "object", properties: { unlinked: { type: "boolean", example: true } } } } } } */
  /* #swagger.responses[404] = { description: 'Not linked to the caller', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
  param('steamId').matches(STEAM_ID_RE),
  validate,
  rust.removeLink,
)

module.exports = playerRustRouter