use serde::{Deserialize, Serialize};
use serde_json::Value;

// 管理后台协议统一收口在 shared-contracts，避免页面脚本和 Rust handler 各自手拼字段。
#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
pub struct AdminLoginRequest {
    pub username: String,
    pub password: String,
}

// 登录成功后返回管理员访问令牌与基础会话信息。
#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
pub struct AdminLoginResponse {
    pub token: String,
    pub admin: AdminSessionPayload,
}

// 管理员会话只暴露页面展示和鉴权调试所需的最小字段。
#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
pub struct AdminSessionPayload {
    pub subject: String,
    pub username: String,
    pub display_name: String,
    pub roles: Vec<String>,
    pub issued_at: String,
    pub expires_at: String,
}

// 页面恢复登录态时读取当前管理员会话。
#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
pub struct AdminMeResponse {
    pub admin: AdminSessionPayload,
}

// 后台概览统一返回服务信息与数据库信息两块，前端不再额外拼装。
#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct AdminOverviewResponse {
    pub service: AdminServiceOverviewPayload,
    pub database: AdminDatabaseOverviewPayload,
}

// 服务概览描述当前 api-server 与 SpacetimeDB 连接配置。
#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
pub struct AdminServiceOverviewPayload {
    pub bind_host: String,
    pub bind_port: u16,
    pub jwt_issuer: String,
    pub admin_enabled: bool,
    pub spacetime_server_url: String,
    pub spacetime_database: String,
}

// 数据库概览返回真实数据库元信息、表清单与统计错误。
#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
pub struct AdminDatabaseOverviewPayload {
    pub database_identity: Option<String>,
    pub owner_identity: Option<String>,
    pub host_type: Option<String>,
    pub schema_table_names: Vec<String>,
    pub table_stats: Vec<AdminDatabaseTableStatPayload>,
    pub fetch_errors: Vec<String>,
}

// 单表统计允许成功和失败并存，避免某张表失败导致整页概览不可用。
#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
pub struct AdminDatabaseTableStatPayload {
    pub table_name: String,
    pub row_count: Option<u64>,
    pub error_message: Option<String>,
}

// 调试请求只允许同源路径、受控请求头和有限请求体。
#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct AdminDebugHttpRequest {
    pub method: String,
    pub path: String,
    pub headers: Option<Vec<AdminDebugHeaderInput>>,
    pub body: Option<String>,
}

// 调试请求头使用显式结构，避免页面直接塞任意对象。
#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
pub struct AdminDebugHeaderInput {
    pub name: String,
    pub value: String,
}

// 调试响应回显状态、响应头与文本/JSON 预览，便于后台排查接口问题。
#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct AdminDebugHttpResponse {
    pub status: u16,
    pub status_text: String,
    pub headers: Vec<AdminDebugHeaderInput>,
    pub body_text: String,
    pub body_json: Option<Value>,
}