package types

import (
	"encoding/json"

	"github.com/bluekeyes/go-gitdiff/gitdiff"
	"github.com/go-git/go-git/v5/plumbing/object"
)

type RepoIndexResponse struct {
	IsEmpty        bool            `json:"is_empty"`
	Ref            string          `json:"ref,omitempty"`
	Readme         string          `json:"readme,omitempty"`
	ReadmeFileName string          `json:"readme_file_name,omitempty"`
	Commits        []Commit        `json:"commits,omitempty"`
	Description    string          `json:"description,omitempty"`
	Files          []NiceTree      `json:"files,omitempty"`
	Branches       []Branch        `json:"branches,omitempty"`
	Tags           []*TagReference `json:"tags,omitempty"`
	TotalCommits   int             `json:"total_commits,omitempty"`
}

type RepoLogResponse struct {
	Commits     []Commit `json:"commits,omitempty"`
	Ref         string   `json:"ref,omitempty"`
	Description string   `json:"description,omitempty"`
	Log         bool     `json:"log,omitempty"`
	Total       int      `json:"total,omitempty"`
	Page        int      `json:"page,omitempty"`
	PerPage     int      `json:"per_page,omitempty"`
}

type RepoCommitResponse struct {
	Ref  string    `json:"ref,omitempty"`
	Diff *NiceDiff `json:"diff,omitempty"`
}

type RepoFormatPatchResponse struct {
	Rev1             string          `json:"rev1,omitempty"`
	Rev2             string          `json:"rev2,omitempty"`
	FormatPatch      []FormatPatch   `json:"format_patch,omitempty"`
	FormatPatchRaw   string          `json:"patch,omitempty"`
	CombinedPatch    []*gitdiff.File `json:"combined_patch,omitempty"`
	CombinedPatchRaw string          `json:"combined_patch_raw,omitempty"`
}

type RepoTreeResponse struct {
	Ref            string     `json:"ref,omitempty"`
	Parent         string     `json:"parent,omitempty"`
	Description    string     `json:"description,omitempty"`
	DotDot         string     `json:"dotdot,omitempty"`
	Files          []NiceTree `json:"files,omitempty"`
	ReadmeFileName string     `json:"readme_filename,omitempty"`
	Readme         string     `json:"readme_contents,omitempty"`
}

type TagReference struct {
	Reference
	Tag     *object.Tag `json:"tag,omitempty"`
	Message string      `json:"message,omitempty"`
}

type Reference struct {
	Name string `json:"name"`
	Hash string `json:"hash"`
}

type Branch struct {
	Reference `json:"reference"`
	Commit    *object.Commit `json:"commit,omitempty"`
	IsDefault bool           `json:"is_default,omitempty"`
}

func (b *Branch) UnmarshalJSON(data []byte) error {
	aux := &struct {
		Reference          `json:"reference"`
		Commit             *object.Commit `json:"commit,omitempty"`
		IsDefault          bool           `json:"is_default,omitempty"`
		MispelledIsDefault bool           `json:"is_deafult,omitempty"` // mispelled name
	}{}

	if err := json.Unmarshal(data, aux); err != nil {
		return err
	}

	b.Reference = aux.Reference
	b.Commit = aux.Commit
	b.IsDefault = aux.IsDefault || aux.MispelledIsDefault // whichever was set

	return nil
}

type RepoTagsResponse struct {
	Tags []*TagReference `json:"tags,omitempty"`
}

type RepoTagResponse struct {
	Tag *TagReference `json:"tag,omitempty"`
}

type RepoBranchesResponse struct {
	Branches []Branch `json:"branches,omitempty"`
}

type RepoBranchResponse struct {
	Branch Branch
}

type RepoDefaultBranchResponse struct {
	Branch string `json:"branch,omitempty"`
}

type ForkStatus int

const (
	UpToDate        ForkStatus = 0
	FastForwardable            = 1
	Conflict                   = 2
	MissingBranch              = 3
)

type ForkInfo struct {
	IsFork bool
	Status ForkStatus
}

type AncestorCheckResponse struct {
	Status ForkStatus `json:"status"`
}

type RepoLanguageDetails struct {
	Name       string
	Percentage float32
	Color      string
}

type RepoLanguageResponse struct {
	// Language: File count
	Languages map[string]int64 `json:"languages"`
}