/**
 * @file OpenAPI 3.0 fragment for server mode's login routes (server/routes/auth.js):
 *   - GET  /api/auth/me      (Auth)
 *   - POST /api/auth/login   (Auth)
 *   - POST /api/auth/logout  (Auth)
 *   - GET  /api/accounts     (Auth) — the Claude and Codex account pools, no keys or tokens
 *   - GET  /api/users        (Auth) — every account's usage (admin/analyst)
 *   - GET  /api/users/audit  (Auth) — staff reads of developers' sessions
 *   - GET/PUT /api/me/prefs, POST /api/me/onboarded (Auth) — the account's own UI preferences
 * Exports `{ tags, schemas, paths }`, combined into the spec by
 * server/openapi-extra.js. See docs/SERVER-MODE.md.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

const tags = [
  {
    name: "Auth",
    description:
      'Server mode\'s login (AGENTHUB_MODE=server). In local mode — the default — only GET /api/auth/me answers, with {mode: "local"}.',
  },
];

const schemas = {
  UserPrefs: {
    type: "object",
    required: ["prefs", "onboardedAt"],
    properties: {
      prefs: { type: "object", additionalProperties: { type: "string" } },
      onboardedAt: { type: "string", nullable: true },
    },
  },
  AuthUser: {
    type: "object",
    required: ["id", "username", "role"],
    properties: {
      id: { type: "integer" },
      username: { type: "string" },
      role: { type: "string", enum: ["admin", "analyst", "developer"] },
      disabled: { type: "boolean" },
    },
  },
  AuthMe: {
    type: "object",
    required: ["mode"],
    properties: {
      mode: { type: "string", enum: ["local", "server"] },
      user: {
        description: "Server mode only: the logged-in user, or null.",
        nullable: true,
        allOf: [{ $ref: "#/components/schemas/AuthUser" }],
      },
    },
  },
};

const err = (description) => ({
  description,
  content: { "application/json": { schema: { $ref: "#/components/schemas/ErrorResponse" } } },
});

// The Users page's account changes: every body carries the admin's own
// password again (`currentPassword`).
const userBody = {
  "application/json": {
    schema: { type: "object", properties: { user: { $ref: "#/components/schemas/AuthUser" } } },
  },
};
const idParam = { name: "id", in: "path", required: true, schema: { type: "integer" } };
const changeBody = (properties, required = []) => ({
  required: true,
  content: {
    "application/json": {
      schema: {
        type: "object",
        required: [...required, "currentPassword"],
        properties: { ...properties, currentPassword: { type: "string" } },
      },
    },
  },
});
const changeResponses = {
  200: { description: "Changed", content: userBody },
  400: err("EBADPASSWORD / EBADROLE / EBADFIELD"),
  403: err("EREAUTH (own password wrong) / EADMIN / ELOCALMODE"),
  404: err("ENOUSER / ENOLANE"),
  409: err("ESELF — your own role or disable"),
  429: err("ETOOMANY — 10 wrong passwords in 15 minutes"),
};

const prefsBody = {
  "application/json": { schema: { $ref: "#/components/schemas/UserPrefs" } },
};

const paths = {
  "/api/me/prefs": {
    get: {
      tags: ["Auth"],
      summary: "The signed-in account's own UI preferences",
      description:
        "Local mode is the one account `local`; server mode one row per account. Keys are the browser's localStorage names (docs/API.md).",
      responses: { 200: { description: "Preferences", content: prefsBody }, 401: err("EAUTH") },
    },
    put: {
      tags: ["Auth"],
      summary: "Merge the account's preferences (null deletes a key)",
      requestBody: {
        required: true,
        content: {
          "application/json": {
            schema: {
              type: "object",
              required: ["prefs"],
              properties: {
                prefs: {
                  type: "object",
                  additionalProperties: { type: "string", nullable: true, maxLength: 8192 },
                },
              },
            },
          },
        },
      },
      responses: {
        200: { description: "Saved", content: prefsBody },
        400: err("EBADPREFS — an unknown key or a value that is not a short string"),
        401: err("EAUTH"),
      },
    },
  },
  "/api/me/onboarded": {
    post: {
      tags: ["Auth"],
      summary: "The account went through (or skipped) the first-run setup",
      responses: { 200: { description: "Marked", content: prefsBody }, 401: err("EAUTH") },
    },
  },
  "/api/users": {
    get: {
      tags: ["Auth"],
      operationId: "listServerUsers",
      summary:
        "Every account with its workspaces, sessions and 7/30-day usage (admin/analyst; 403 EADMIN for a developer)",
      responses: {
        200: {
          description: "Accounts",
          content: {
            "application/json": {
              schema: {
                type: "object",
                properties: {
                  users: {
                    type: "array",
                    items: {
                      allOf: [
                        { $ref: "#/components/schemas/AuthUser" },
                        {
                          type: "object",
                          properties: {
                            workspaces: { type: "integer" },
                            sessions: { type: "integer" },
                            last7d: {
                              type: "object",
                              properties: { cost: { type: "number" }, tokens: { type: "integer" } },
                            },
                            last30d: {
                              type: "object",
                              properties: { cost: { type: "number" }, tokens: { type: "integer" } },
                            },
                          },
                        },
                      ],
                    },
                  },
                },
              },
            },
          },
        },
        403: err("EADMIN — a developer"),
      },
    },
    post: {
      tags: ["Auth"],
      operationId: "createServerUser",
      summary:
        "Admin: add an account. Needs the admin's own password again (currentPassword); audited",
      requestBody: {
        required: true,
        content: {
          "application/json": {
            schema: {
              type: "object",
              required: ["username", "password", "currentPassword"],
              properties: {
                username: { type: "string" },
                password: { type: "string", minLength: 8 },
                role: {
                  type: "string",
                  enum: ["admin", "analyst", "developer"],
                  default: "developer",
                },
                currentPassword: { type: "string" },
              },
            },
          },
        },
      },
      responses: {
        201: { description: "Created", content: userBody },
        400: err("EBADUSER / EBADPASSWORD / EBADROLE"),
        403: err("EREAUTH (own password wrong) / EADMIN / ELOCALMODE"),
        409: err("EEXISTS"),
        429: err("ETOOMANY — 10 wrong passwords in 15 minutes"),
      },
    },
  },
  "/api/users/{id}": {
    patch: {
      tags: ["Auth"],
      operationId: "updateServerUser",
      summary:
        "Admin: change a role and/or disable (ending every login) or enable. Never your own (ESELF)",
      parameters: [idParam],
      requestBody: changeBody({
        role: { type: "string", enum: ["admin", "analyst", "developer"] },
        disabled: { type: "boolean" },
      }),
      responses: changeResponses,
    },
  },
  "/api/users/{id}/password": {
    post: {
      tags: ["Auth"],
      operationId: "resetServerUserPassword",
      summary: "Admin: a new password for that user; every login of theirs ends",
      parameters: [idParam],
      requestBody: changeBody({ password: { type: "string", minLength: 8 } }, ["password"]),
      responses: changeResponses,
    },
  },
  "/api/users/{id}/workspaces": {
    post: {
      tags: ["Auth"],
      operationId: "assignServerUserWorkspace",
      summary: "Admin: make that user the owner of a workspace (lane)",
      parameters: [idParam],
      requestBody: changeBody({ laneId: { type: "integer" } }, ["laneId"]),
      responses: changeResponses,
    },
  },
  "/api/users/audit": {
    get: {
      tags: ["Auth"],
      operationId: "listAuditLog",
      summary: "Admin/analyst reads of sessions developers own, newest first",
      parameters: [{ name: "limit", in: "query", schema: { type: "integer", maximum: 1000 } }],
      responses: {
        200: {
          description: "Entries",
          content: {
            "application/json": {
              schema: {
                type: "object",
                properties: {
                  entries: {
                    type: "array",
                    items: {
                      type: "object",
                      properties: {
                        id: { type: "integer" },
                        at: { type: "string" },
                        method: { type: "string" },
                        path: { type: "string" },
                        session_id: { type: "string", nullable: true },
                        reader: { type: "string", nullable: true },
                        owner: { type: "string", nullable: true },
                      },
                    },
                  },
                },
              },
            },
          },
        },
        403: err("EADMIN — a developer"),
      },
    },
  },
  "/api/accounts": {
    get: {
      tags: ["Auth"],
      operationId: "listPoolAccounts",
      summary:
        "The Claude and Codex account pools as the balancer sees them (never a key or token)",
      parameters: [
        {
          name: "force",
          in: "query",
          schema: { type: "string", enum: ["1"] },
          description: "Re-read every account's quota first",
        },
      ],
      responses: {
        200: {
          description: "Accounts with live panes, recent spend and quota",
          content: {
            "application/json": {
              schema: {
                type: "object",
                properties: {
                  blockPercent: { type: "number" },
                  accounts: {
                    type: "array",
                    items: {
                      type: "object",
                      properties: {
                        name: { type: "string" },
                        addedAt: { type: "string" },
                        expiresAt: { type: "string" },
                        expired: { type: "boolean" },
                        livePanes: { type: "integer" },
                        spend5h: { type: "number" },
                        spend7d: { type: "number" },
                        quota: { type: "object", nullable: true },
                        quotaPercent: { type: "number", nullable: true },
                        full: { type: "boolean" },
                      },
                    },
                  },
                  codex: {
                    type: "array",
                    description:
                      "The Codex account pool (server/lib/codex-pool.js), same fields plus `kind`; no expiry",
                    items: {
                      type: "object",
                      properties: {
                        name: { type: "string" },
                        kind: { type: "string", enum: ["apikey", "chatgpt"] },
                        addedAt: { type: "string" },
                        livePanes: { type: "integer" },
                        spend5h: { type: "number" },
                        spend7d: { type: "number" },
                        quota: { type: "object", nullable: true },
                        quotaPercent: { type: "number", nullable: true },
                        full: { type: "boolean" },
                      },
                    },
                  },
                },
              },
            },
          },
        },
      },
    },
  },
  "/api/auth/me": {
    get: {
      tags: ["Auth"],
      operationId: "authMe",
      summary: "The dashboard's mode and, in server mode, who is logged in",
      responses: {
        200: {
          description: "Mode and user",
          content: { "application/json": { schema: { $ref: "#/components/schemas/AuthMe" } } },
        },
      },
    },
  },
  "/api/auth/login": {
    post: {
      tags: ["Auth"],
      operationId: "authLogin",
      summary: "Log in; sets the httpOnly, SameSite=Strict cookie agenthub_sid",
      requestBody: {
        required: true,
        content: {
          "application/json": {
            schema: {
              type: "object",
              required: ["username", "password"],
              properties: { username: { type: "string" }, password: { type: "string" } },
            },
          },
        },
      },
      responses: {
        200: {
          description: "Logged in",
          content: {
            "application/json": {
              schema: {
                type: "object",
                properties: { user: { $ref: "#/components/schemas/AuthUser" } },
              },
            },
          },
        },
        401: err("EBADLOGIN — wrong username or password, or a disabled user"),
        403: err("EBADORIGIN — a cross-origin request"),
        404: err("ENOTSERVER — the dashboard is in local mode"),
        429: err("ETOOMANY — too many failed logins from this address (15 minutes)"),
      },
    },
  },
  "/api/auth/logout": {
    post: {
      tags: ["Auth"],
      operationId: "authLogout",
      summary: "End this login and clear its cookie",
      responses: {
        200: {
          description: "Logged out",
          content: {
            "application/json": {
              schema: { type: "object", properties: { ok: { type: "boolean" } } },
            },
          },
        },
      },
    },
  },
};

module.exports = { tags, schemas, paths };