use serde::{Deserialize, Serialize};
use sqlx::FromRow;

// sqlx::Any maps SQLite INTEGER to i64 (BIGINT), not bool.
// These helpers let us store is_admin as i64 in DB-mapped structs
// while still serializing it as a JSON boolean for the frontend.
mod serde_i64_bool {
    use serde::{Deserialize, Deserializer, Serializer};
    pub fn serialize<S: Serializer>(v: &i64, s: S) -> Result<S::Ok, S::Error> {
        s.serialize_bool(*v != 0)
    }
    pub fn deserialize<'de, D: Deserializer<'de>>(d: D) -> Result<i64, D::Error> {
        Ok(if bool::deserialize(d)? { 1 } else { 0 })
    }
}

#[derive(Debug, Serialize, Deserialize, FromRow)]
pub struct User {
    pub id: String,
    pub username: String,
    pub email: String,
    #[serde(skip_serializing)]
    pub password_hash: String,
    #[serde(with = "serde_i64_bool")]
    pub is_admin: i64,
}

#[derive(Debug, Serialize, Deserialize, FromRow)]
pub struct AdminUserView {
    pub id: String,
    pub username: String,
    pub email: String,
    #[serde(with = "serde_i64_bool")]
    pub is_admin: i64,
    pub created_at: String,
}

#[derive(Debug, Serialize, Deserialize, FromRow)]
pub struct Folder {
    pub id: String,
    pub owner_id: String,
    pub parent_id: Option<String>,
    pub name: String,
    pub created_at: String,
}

#[derive(Debug, Serialize, Deserialize, FromRow)]
pub struct File {
    pub id: String,
    pub owner_id: String,
    pub document_id: Option<String>,
    pub folder_id: Option<String>,
    pub name: String,
    pub mime_type: String,
    pub created_at: String,
}

#[derive(Debug, Serialize, Deserialize, FromRow)]
pub struct Document {
    pub id: String,
    pub owner_id: String,
    pub folder_id: Option<String>,
    pub title: String,
    #[serde(skip_serializing)]
    pub content: Option<Vec<u8>>,
    pub thumbnail_svg: Option<String>,
    pub public_role: Option<String>,
    #[serde(default)]
    #[sqlx(default)]
    pub effective_role: Option<String>,
    pub created_at: String,
    pub updated_at: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct RegisterRequest {
    pub username: String,
    pub email: String,
    pub password: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct LoginRequest {
    pub email: String,
    pub password: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct UpdateProfileRequest {
    pub username: String,
    pub email: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct ChangePasswordRequest {
    pub current_password: String,
    pub new_password: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct CreateFolderRequest {
    pub name: String,
    pub parent_id: Option<String>,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct CreateDocumentRequest {
    pub title: String,
    pub folder_id: Option<String>,
    pub content: Option<String>,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct UpdateDocumentRequest {
    pub title: Option<String>,
    pub folder_id: Option<String>,
    pub public_role: Option<String>,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct StorageStats {
    pub documents_size_bytes: i64,
    pub files_size_bytes: i64,
    pub total_size_bytes: i64,
}

#[derive(Debug, Serialize, Deserialize, FromRow)]
pub struct Collaborator {
    pub id: String,
    pub document_id: String,
    pub user_id: String,
    pub role: String,
    pub created_at: String,
}

#[derive(Debug, Serialize, Deserialize, FromRow)]
pub struct CollaboratorView {
    pub id: String,
    pub user_id: String,
    pub username: String,
    pub email: String,
    pub role: String,
    pub created_at: String,
}

#[derive(Debug, Serialize, Deserialize, FromRow)]
pub struct Invitation {
    pub id: String,
    pub document_id: String,
    pub role: String,
    pub token: String,
    pub created_at: String,
    pub expires_at: Option<String>,
}

#[derive(Debug, Serialize, Deserialize, FromRow)]
pub struct Comment {
    pub id: String,
    pub document_id: String,
    pub user_id: String,
    pub content: String,
    pub resolved: bool,
    pub created_at: String,
    pub author_name: Option<String>,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct CreateCommentRequest {
    pub content: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct UpdateCommentRequest {
    pub content: Option<String>,
    pub resolved: Option<bool>,
}

#[derive(Debug, Serialize, Deserialize, FromRow)]
pub struct DocumentVersion {
    pub id: String,
    pub document_id: String,
    pub user_id: String,
    pub content: String,
    pub created_at: String,
    #[sqlx(default)]
    pub author_name: Option<String>,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct CreateVersionRequest {
    pub content: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct InviteRequest {
    pub email: String,
    pub role: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct AdminCreateUserRequest {
    pub username: String,
    pub email: String,
    pub password: String,
    pub is_admin: Option<bool>,
}

#[derive(Debug, Serialize, Deserialize, FromRow)]
pub struct UsagePoint {
    pub date: String,
    pub count: i64,
}

#[derive(Debug, Serialize, Deserialize, FromRow)]
pub struct ApiKeyView {
    pub id: String,
    pub name: String,
    pub key_prefix: String,
    pub created_at: String,
    pub last_used_at: Option<String>,
    pub rate_limit: i64,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct CreateApiKeyRequest {
    pub name: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct SetupRequest {
    pub username: String,
    pub email: String,
    pub password: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct SetupStatus {
    pub needs_setup: bool,
    pub registration_enabled: bool,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct UpdateUserRequest {
    pub is_admin: Option<bool>,
    pub username: Option<String>,
    pub email: Option<String>,
}