// Copyright 2022 Princess B33f Heavy Industries / Dave Shanley
// SPDX-License-Identifier: MIT

package model

import (
    "github.com/pb33f/libopenapi/datamodel/low"
    "github.com/pb33f/libopenapi/datamodel/low/v3"
)

type ServerChanges struct {
    PropertyChanges
    ServerVariableChanges map[string]*ServerVariableChanges
}

func (s *ServerChanges) TotalChanges() int {
    c := s.PropertyChanges.TotalChanges()
    for k := range s.ServerVariableChanges {
        c += s.ServerVariableChanges[k].TotalChanges()
    }
    return c
}

func (s *ServerChanges) TotalBreakingChanges() int {
    c := s.PropertyChanges.TotalBreakingChanges()
    for k := range s.ServerVariableChanges {
        c += s.ServerVariableChanges[k].TotalBreakingChanges()
    }
    return c
}

func CompareServers(l, r *v3.Server) *ServerChanges {
    if low.AreEqual(l, r) {
        return nil
    }
    var changes []*Change
    var props []*PropertyCheck

    // URL
    props = append(props, &PropertyCheck{
        LeftNode:  l.URL.ValueNode,
        RightNode: r.URL.ValueNode,
        Label:     v3.URLLabel,
        Changes:   &changes,
        Breaking:  true,
        Original:  l,
        New:       r,
    })
    // Description
    props = append(props, &PropertyCheck{
        LeftNode:  l.Description.ValueNode,
        RightNode: r.Description.ValueNode,
        Label:     v3.DescriptionLabel,
        Changes:   &changes,
        Breaking:  false,
        Original:  l,
        New:       r,
    })

    CheckProperties(props)
    sc := new(ServerChanges)
    sc.Changes = changes
    sc.ServerVariableChanges = CheckMapForChanges(l.Variables.Value, r.Variables.Value,
        &changes, v3.VariablesLabel, CompareServerVariables)

    return sc
}