package judgment

// PollResult holds the result for each proposal, in the original proposal order, or sorted by Rank.
type PollResult struct {
	Proposals       ProposalsResults `json:"proposals"`       // matches the order of the input proposals' tallies
	ProposalsSorted ProposalsResults `json:"proposalsSorted"` // same Results, but sorted by Rank this time
}

// ProposalResult holds the computed Rank for a proposal, as well as analysis data.
type ProposalResult struct {
	Index    int               `json:"index"` // Index of the proposal in the input proposals' tallies.  Useful with ProposalSorted.
	Rank     int               `json:"rank"`  // Rank starts at 1 (best) and goes upwards.  Equal Proposals share the same rank.
	Score    string            `json:"score"` // Higher Score lexicographically → better Rank.
	Analysis *ProposalAnalysis `json:"analysis"`
	Tally    *ProposalTally    `json:"tally"` // The tally of grades that generated this result.
}

// ProposalsResults implements sort.Interface based on the Score field.
type ProposalsResults []*ProposalResult

// Len is part of sort.Interface
func (a ProposalsResults) Len() int { return len(a) }

// Less is part of sort.Interface
func (a ProposalsResults) Less(i, j int) bool { return a[i].Score < a[j].Score }

// Swap is part of sort.Interface
func (a ProposalsResults) Swap(i, j int) { a[i], a[j] = a[j], a[i] }