Configuration overhaul: version 2 for the configuration toml file (breaking changes)

[josecelano]

A set of breaking changes in the TOML config file to improve readability and validation.

Subtasks

• Normalize TrackerMode enum to use the same values as the Tracker.
• Use lowercase for auth::email_on_signup config option variants.
• Rename auth::email_on_signup::None variant to auth::email_on_signup::Ingored.
• Include the log_lovel option in the new section logging and make it mandatory with info default value.
• Extract password constraints in a new type (section auth).
• Extract SMPT credentials in a new type (section mail).
• Include the socket address (IP+PORT) instead of only the port (section net).
• Use alphabetical order for TOML keys inside the section.

Notes

• We are normalizing all variants in enums to lowercase in TOML files.
• The option base_url (section net) already exists in the current version. It's not changed in the new version. It's optional. If it's not present it uses the request headers to get the current host.

Current toml version

log_level = "info"

[website]
name = "Torrust"

[tracker]
api_url = "http://localhost:1212"
mode = "Public"
token = "MyAccessToken"
token_valid_seconds = 7257600
url = "udp://localhost:6969"

[net]
port = 3001

# Uncomment if you want to enable TSL for development
#[net.tsl]
#ssl_cert_path = "./storage/index/lib/tls/localhost.crt"
#ssl_key_path = "./storage/index/lib/tls/localhost.key"

[auth]
email_on_signup = "Optional"
max_password_length = 64
min_password_length = 6
secret_key = "MaxVerstappenWC2021"

[database]
connect_url = "sqlite://data.db?mode=rwc"

[mail]
email_verification_enabled = false
from = "example@email.com"
password = ""
port = 25
reply_to = "noreply@email.com"
server = ""
username = ""

[image_cache]
capacity = 128000000
entry_size_limit = 4000000
max_request_timeout_ms = 1000
user_quota_bytes = 64000000
user_quota_period_seconds = 3600

[api]
default_torrent_page_size = 10
max_torrent_page_size = 30

[tracker_statistics_importer]
port = 3002
torrent_info_update_interval = 3600

New toml version

[logging]
log_level = "info"

[website]
name = "Torrust"

[tracker]
api_url = "http://localhost:1212"
mode = "public"
token = "MyAccessToken"
token_valid_seconds = 7257600
url = "udp://localhost:6969"

[net]
base_url = "http://localhost"
bind_address = "0.0.0.0:3001"

# Uncomment if you want to enable TSL for development
#[net.tsl]
#ssl_cert_path = "./storage/index/lib/tls/localhost.crt"
#ssl_key_path = "./storage/index/lib/tls/localhost.key"

[auth]
email_on_signup = "Optional"
secret_key = "MaxVerstappenWC2021"

[auth.password_constraints]
max_password_length = 64
min_password_length = 6

[database]
connect_url = "sqlite://data.db?mode=rwc"

[mail]
email_verification_enabled = false
from = "example@email.com"
reply_to = "noreply@email.com"

[mail.smtp]
port = 25
server = ""

[mail.smtp.credentials]
password = ""
username = ""

[image_cache]
capacity = 128000000
entry_size_limit = 4000000
max_request_timeout_ms = 1000
user_quota_bytes = 64000000
user_quota_period_seconds = 3600

[api]
default_torrent_page_size = 10
max_torrent_page_size = 30

[tracker_statistics_importer]
port = 3002
torrent_info_update_interval = 3600

[josecelano]

ACK 35a125e