//! # Server configuration
//!
//! @author Pierre Hubert
use serde::Serialize;

use crate::constants::{conservation_policy, MIN_SUPPORTED_MOBILE_VERSION, password_policy};
use crate::constants::conversations::{ALLOWED_CONVERSATION_FILES_TYPES, CONVERSATION_FILES_MAX_SIZE, CONVERSATION_WRITING_EVENT_INTERVAL, CONVERSATION_WRITING_EVENT_LIFETIME, MAX_CONVERSATION_MESSAGE_LENGTH, MIN_CONVERSATION_MESSAGE_LENGTH};
use crate::data::config::conf;

#[derive(Serialize)]
struct PasswordPolicy {
    allow_email_in_password: bool,
    allow_name_in_password: bool,
    min_password_length: u64,
    min_number_upper_case_letters: u64,
    min_number_lower_case_letters: u64,
    min_number_digits: u64,
    min_number_special_characters: u64,
    min_categories_presence: u64,
}

#[derive(Serialize)]
struct DataConservationPolicy {
    min_inactive_account_lifetime: u64,
    min_notification_lifetime: u64,
    min_comments_lifetime: u64,
    min_posts_lifetime: u64,
    min_conversation_messages_lifetime: u64,
    min_likes_lifetime: u64,
}

#[derive(Serialize)]
struct ConversationsPolicy {
    min_conversation_message_len: usize,
    max_conversation_message_len: usize,
    allowed_conversation_files_type: [&'static str; 17],
    conversation_files_max_size: usize,
    conversation_writing_event_interval: u64,
    conversation_writing_event_lifetime: u64,
}

#[derive(Serialize)]
pub struct ServerConfig {
    min_supported_mobile_version: &'static str,
    terms_url: &'static str,
    privacy_policy_url: &'static str,
    play_store_url: &'static str,
    android_direct_download_url: String,
    password_policy: PasswordPolicy,
    data_conservation_policy: DataConservationPolicy,
    conversations_policy: ConversationsPolicy,
}

impl ServerConfig {
    pub fn new() -> Self {
        ServerConfig {
            min_supported_mobile_version: MIN_SUPPORTED_MOBILE_VERSION,
            terms_url: &conf().terms_url,
            privacy_policy_url: &conf().privacy_policy_url,
            play_store_url: &conf().play_store_url,
            android_direct_download_url: conf().android_direct_download_url.clone(),

            password_policy: PasswordPolicy {
                allow_email_in_password: password_policy::ALLOW_EMAIL_IN_PASSWORD,
                allow_name_in_password: password_policy::ALLOW_NAME_IN_PASSWORD,
                min_password_length: password_policy::MIN_PASSWORD_LENGTH,
                min_number_upper_case_letters: password_policy::MIN_NUMBER_UPPERCASE_LETTER,
                min_number_lower_case_letters: password_policy::MIN_NUMBER_LOWERCASE_LETTER,
                min_number_digits: password_policy::MIN_NUMBER_DIGITS,
                min_number_special_characters: password_policy::MIN_NUMBER_SPECIAL_CHARACTERS,
                min_categories_presence: password_policy::MIN_CATEGORIES_PRESENCE,
            },

            data_conservation_policy: DataConservationPolicy {
                min_inactive_account_lifetime: conservation_policy::MIN_INACTIVE_ACCOUNT_LIFETIME.as_secs(),
                min_notification_lifetime: conservation_policy::MIN_NOTIFICATIONS_LIFETIME.as_secs(),
                min_comments_lifetime: conservation_policy::MIN_COMMENTS_LIFETIME.as_secs(),
                min_posts_lifetime: conservation_policy::MIN_POSTS_LIFETIME.as_secs(),
                min_conversation_messages_lifetime: conservation_policy::MIN_CONVERSATION_MESSAGES_LIFETIME.as_secs(),
                min_likes_lifetime: conservation_policy::MIN_LIKES_LIFETIME.as_secs(),
            },

            conversations_policy: ConversationsPolicy {
                min_conversation_message_len: MIN_CONVERSATION_MESSAGE_LENGTH,
                max_conversation_message_len: MAX_CONVERSATION_MESSAGE_LENGTH,
                allowed_conversation_files_type: ALLOWED_CONVERSATION_FILES_TYPES,
                conversation_files_max_size: CONVERSATION_FILES_MAX_SIZE,
                conversation_writing_event_interval: CONVERSATION_WRITING_EVENT_INTERVAL,
                conversation_writing_event_lifetime: CONVERSATION_WRITING_EVENT_LIFETIME,
            },
        }
    }
}