auto_mockable.stencil

// swiftlint:disable file_length
fileprivate func compareOptionals<T>(lhs: T?, rhs: T?, compare: (_ lhs: T, _ rhs: T) -> Bool) -> Bool {
    switch (lhs, rhs) {
    case let (lValue?, rValue?):
        return compare(lValue, rValue)
    case (nil, nil):
        return true
    default:
        return false
    }
}

fileprivate func compareArrays<T>(lhs: [T], rhs: [T], compare: (_ lhs: T, _ rhs: T) -> Bool) -> Bool {
    guard lhs.count == rhs.count else { return false }
    for (idx, lhsItem) in lhs.enumerated() {
        guard compare(lhsItem, rhs[idx]) else { return false }
    }

    return true
}

{% macro compareVariables variables %}
    {% for variable in variables where variable.readAccess != "private" and variable.readAccess != "fileprivate" %}{% if not variable.annotations.skipEquality %}guard {% if not variable.isOptional %}{% if not variable.annotations.arrayEquality %}lhs.{{ variable.name }} == rhs.{{ variable.name }}{% else %}compareArrays(lhs: lhs.{{ variable.name }}, rhs: rhs.{{ variable.name }}, compare: ==){% endif %}{% else %}compareOptionals(lhs: lhs.{{ variable.name }}, rhs: rhs.{{ variable.name }}, compare: ==){% endif %} else { return false }{% endif %}
    {% endfor %}
{% endmacro %}

// MARK: - AutoEquatable for classes, protocols, structs
{% for type in types.types|!enum where type.implements.AutoEquatable or type|annotated:"AutoEquatable" %}
// MARK: - {{ type.name }} AutoEquatable
{% if not type.kind == "protocol" and not type.based.NSObject %}extension {{ type.name }}: Equatable {}{% endif %}
{% if type.supertype.based.Equatable or type.supertype.implements.AutoEquatable or type.supertype|annotated:"AutoEquatable" %}THIS WONT COMPILE, WE DONT SUPPORT INHERITANCE for AutoEquatable{% endif %}
{{ type.accessLevel }} func == (lhs: {{ type.name }}, rhs: {{ type.name }}) -> Bool {
    {% if not type.kind == "protocol" %}
    {% call compareVariables type.storedVariables %}
    {% else %}
    {% call compareVariables type.allVariables %}
    {% endif %}
    return true
}
{% endfor %}

// MARK: - AutoEquatable for Enums
{% for type in types.enums where type.implements.AutoEquatable or type|annotated:"AutoEquatable" %}
// MARK: - {{ type.name }} AutoEquatable
extension {{ type.name }}: Equatable {}
{{ type.accessLevel }} func == (lhs: {{ type.name }}, rhs: {{ type.name }}) -> Bool {
    switch (lhs, rhs) {
    {% for case in type.cases %}
    {% if case.hasAssociatedValue %}
    {% if case.associatedValues.count == 1 %}
    case let (.{{ case.name }}(lhs), .{{ case.name }}(rhs)):
    {% else %}
    {% map case.associatedValues into lhsValues using associated %}lhs{{ associated.externalName|upperFirstLetter }}{% endmap %}
    {% map case.associatedValues into rhsValues using associated %}rhs{{ associated.externalName|upperFirstLetter }}{% endmap %}
    case let (.{{ case.name }}({{ lhsValues|join: ", " }}), .{{ case.name }}({{ rhsValues|join: ", " }})):
    {% endif %}
    {% else %}
    case (.{{ case.name }}, .{{ case.name }}):
    {% endif %}
        {% if not case.hasAssociatedValue %}return true{% else %}
        {% if case.associatedValues.count == 1 %}
        return lhs == rhs
        {% else %}
        {% for associated in case.associatedValues %}if lhs{{ associated.externalName|upperFirstLetter }} != rhs{{ associated.externalName|upperFirstLetter }} { return false }
        {% endfor %}return true
        {% endif %}
        {% endif %}
    {% endfor %}
    {{ 'default: return false' if type.cases.count > 1 }}
    }
}
{% endfor %}