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A foundation for building Elixir Phoenix apps — SaaS, social networks, ERP systems, marketplaces, and more
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Files
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Files
lib/modules/sitemap/locale_path.ex
defmodule PhoenixKit.Modules.Sitemap.LocalePath do
@moduledoc """
Shared locale-segment policy for sitemap sources.
Every sitemap source (`publishing`, `static`, `posts`, ...) decides
whether a URL entry should carry a language prefix using the same
four rules:
1. No language supplied → no prefix.
2. Single-language mode (Languages module disabled or only one
enabled) → no prefix is meaningful.
3. The language is the site's primary AND the site-wide
`Languages.default_language_no_prefix?/0` setting is on → omit
the prefix to keep the sitemap consistent with the public URL
shape served at request time. Indexed canonicals must not drift
from served URLs.
4. Otherwise → emit the prefix.
Each source still decides **how** to format the prefix (base code via
`DialectMapper.extract_base/1`, or display code via
`LanguageHelpers.get_display_code/2` for hreflang-aware emission) —
this module owns only the decision, not the formatting.
"""
alias PhoenixKit.Modules.Languages
@doc """
Returns true when the sitemap entry for `language` should include
the locale segment. `is_default` should be true when `language` is
the site's primary language.
Wrapped to survive boot / mix-task contexts where the Languages
module or Settings table may not be reachable —
`single_language_mode?/0`'s rescue returns `true` in that case, so
`emit_prefix?/2` falls back to `false` (no prefix). That keeps the
sitemap consistent with single-language sites under DB-unreachable
conditions; runtime sitemap generation always has a reachable DB.
"""
@spec emit_prefix?(String.t() | nil, boolean()) :: boolean()
def emit_prefix?(nil, _is_default), do: false
def emit_prefix?(_language, is_default) do
cond do
single_language_mode?() -> false
is_default and Languages.default_language_no_prefix?() -> false
true -> true
end
end
@doc """
Returns true when the site is effectively single-language (Languages
module disabled, or only one language enabled). Defensive: rescues
to `true` on any lookup failure so the sitemap omits prefixes
during install / mix tasks rather than emitting broken multi-lang
entries.
"""
@spec single_language_mode?() :: boolean()
def single_language_mode? do
not Languages.enabled?() or length(Languages.get_enabled_languages()) <= 1
rescue
_ -> true
end
end