const (
    ChangeStatusNew       = "NEW"
    ChangeStatusAbandoned = "ABANDONED"
    ChangeStatusMerged    = "MERGED"
)

const (
    FileInfoAdded     = "A"
    FileInfoDeleted   = "D"
    FileInfoRenamed   = "R"
    FileInfoCopied    = "C"
    FileInfoRewritten = "W"
)

var ErrChangeNotExist = errors.New("gerrit: requested change does not exist")

var ErrProjectNotExist = errors.New("gerrit: requested project does not exist")

var NoAuth = noAuth{}

type AccountInfo struct {
    NumericID int64  `json:"_account_id"`
    Name      string `json:"name,omitempty"`
    Email     string `json:"email,omitempty"`
    Username  string `json:"username,omitempty"`

    // MoreAccounts is set on the last account from QueryAccounts if
    // the result set is truncated by an 'n' parameter (or has more).
    MoreAccounts bool `json:"_more_accounts"`
}

type ApprovalInfo struct {
    AccountInfo
    Value int       `json:"value"`
    Date  TimeStamp `json:"date"`
}

type Auth interface {
    // contains filtered or unexported methods
}

type BranchInfo struct {
    Ref       string `json:"ref"`
    Revision  string `json:"revision"`
    CanDelete bool   `json:"can_delete"`
}

type ChangeInfo struct {
    // ID is the ID of the change in the format
    // "'<project>~<branch>~<Change-Id>'", where 'project',
    // 'branch' and 'Change-Id' are URL encoded. For 'branch' the
    // refs/heads/ prefix is omitted.
    ID           string `json:"id"`
    ChangeNumber int    `json:"_number"`
    ChangeID     string `json:"change_id"`

    Project string `json:"project"`

    // Branch is the name of the target branch.
    // The refs/heads/ prefix is omitted.
    Branch string `json:"branch"`

    Topic    string       `json:"topic"`
    Assignee *AccountInfo `json:"assignee"`
    Hashtags []string     `json:"hashtags"`

    // Subject is the subject of the change
    // (the header line of the commit message).
    Subject string `json:"subject"`

    // Status is the status of the change (NEW, SUBMITTED, MERGED,
    // ABANDONED, DRAFT).
    Status string `json:"status"`

    Created    TimeStamp    `json:"created"`
    Updated    TimeStamp    `json:"updated"`
    Submitted  TimeStamp    `json:"submitted"`
    Submitter  *AccountInfo `json:"submitter"`
    SubmitType string       `json:"submit_type"`

    // Mergeable indicates whether the change can be merged.
    // It is not set for already-merged changes,
    // nor if the change is untested, nor if the
    // SKIP_MERGEABLE option has been set.
    Mergeable bool `json:"mergeable"`

    // Submittable indicates whether the change can be submitted.
    // It is only set if requested, using the "SUBMITTABLE" option.
    Submittable bool `json:"submittable"`

    // Insertions and Deletions count inserted and deleted lines.
    Insertions int `json:"insertions"`
    Deletions  int `json:"deletions"`

    // CurrentRevision is the commit ID of the current patch set
    // of this change.  This is only set if the current revision
    // is requested or if all revisions are requested (fields
    // "CURRENT_REVISION" or "ALL_REVISIONS").
    CurrentRevision string `json:"current_revision"`

    // Revisions maps a commit ID of the patch set to a
    // RevisionInfo entity.
    //
    // Only set if the current revision is requested (in which
    // case it will only contain a key for the current revision)
    // or if all revisions are requested.
    Revisions map[string]RevisionInfo `json:"revisions"`

    // Owner is the author of the change.
    // The details are only filled in if field "DETAILED_ACCOUNTS" is requested.
    Owner *AccountInfo `json:"owner"`

    // Messages are included if field "MESSAGES" is requested.
    Messages []ChangeMessageInfo `json:"messages"`

    // Labels maps label names to LabelInfo entries.
    Labels map[string]LabelInfo `json:"labels"`

    // ReviewerUpdates are included if field "REVIEWER_UPDATES" is requested.
    ReviewerUpdates []ReviewerUpdateInfo `json:"reviewer_updates"`

    // Reviewers maps reviewer state ("REVIEWER", "CC", "REMOVED")
    // to a list of accounts.
    // REVIEWER lists users with at least one non-zero vote on the change.
    // CC lists users added to the change who has not voted.
    // REMOVED lists users who were previously reviewers on the change
    // but who have been removed.
    // Reviewers is only included if "DETAILED_LABELS" is requested.
    Reviewers map[string][]*AccountInfo `json:"reviewers"`

    // WorkInProgress indicates that the change is marked as a work in progress.
    // (This means it is not yet ready for review, but it is still publicly visible.)
    WorkInProgress bool `json:"work_in_progress"`

    // HasReviewStarted indicates whether the change has ever been marked
    // ready for review in the past (not as a work in progress).
    HasReviewStarted bool `json:"has_review_started"`

    // RevertOf lists the numeric Change-Id of the change that this change reverts.
    RevertOf int `json:"revert_of"`

    // MoreChanges is set on the last change from QueryChanges if
    // the result set is truncated by an 'n' parameter.
    MoreChanges bool `json:"_more_changes"`
}

type ChangeMessageInfo struct {
    ID             string       `json:"id"`
    Author         *AccountInfo `json:"author"`
    Time           TimeStamp    `json:"date"`
    Message        string       `json:"message"`
    Tag            string       `json:"tag,omitempty"`
    RevisionNumber int          `json:"_revision_number"`
}

type Client struct {

    // HTTPClient optionally specifies an HTTP client to use
    // instead of http.DefaultClient.
    HTTPClient *http.Client
    // contains filtered or unexported fields
}

type CommentInfo struct {
    PatchSet int          `json:"patch_set,omitempty"`
    ID       string       `json:"id"`
    Path     string       `json:"path,omitempty"`
    Message  string       `json:"message,omitempty"`
    Updated  TimeStamp    `json:"updated"`
    Author   *AccountInfo `json:"author,omitempty"`
}

type CommentInput struct {
    Line    int    `json:"line"`
    Message string `json:"message"`
}

type CommitInfo struct {
    Author    GitPersonInfo `json:"author"`
    Committer GitPersonInfo `json:"committer"`
    CommitID  string        `json:"commit"`
    Subject   string        `json:"subject"`
    Message   string        `json:"message"`
    Parents   []CommitInfo  `json:"parents"`
}

type FetchInfo struct {
    URL      string            `json:"url"`
    Ref      string            `json:"ref"`
    Commands map[string]string `json:"commands"`
}

type FileInfo struct {
    Status        string `json:"status"`
    Binary        bool   `json:"binary"`
    OldPath       string `json:"old_path"`
    LinesInserted int    `json:"lines_inserted"`
    LinesDeleted  int    `json:"lines_deleted"`
}

type GitPersonInfo struct {
    Name     string    `json:"name"`
    Email    string    `json:"Email"`
    Date     TimeStamp `json:"date"`
    TZOffset int       `json:"tz"`
}

type GroupInfo struct {
    ID      string           `json:"id"`
    URL     string           `json:"url"`
    Name    string           `json:"name"`
    GroupID int64            `json:"group_id"`
    Options GroupOptionsInfo `json:"options"`
    Owner   string           `json:"owner"`
    OwnerID string           `json:"owner_id"`
}

type GroupOptionsInfo struct {
    VisibleToAll bool `json:"visible_to_all"`
}

type HTTPError struct {
    Res     *http.Response
    Body    []byte // 4KB prefix
    BodyErr error  // any error reading Body
}

type HashtagsInput struct {
    Add    []string `json:"add"`
    Remove []string `json:"remove"`
}

type LabelInfo struct {
    // Optional means the label may be set, but it’s neither
    // necessary for submission nor does it block submission if
    // set.
    Optional bool `json:"optional"`

    All []ApprovalInfo `json:"all"`
}

type ProjectInfo struct {
    ID          string            `json:"id"`
    Name        string            `json:"name"`
    Parent      string            `json:"parent"`
    CloneURL    string            `json:"clone_url"`
    Description string            `json:"description"`
    State       string            `json:"state"`
    Branches    map[string]string `json:"branches"`
}

type ProjectInput struct {
    Parent      string `json:"parent,omitempty"`
    Description string `json:"description,omitempty"`
    SubmitType  string `json:"submit_type,omitempty"`

    CreateNewChangeForAllNotInTarget string `json:"create_new_change_for_all_not_in_target,omitempty"`
}

type QueryAccountsOpt struct {
    // N is the number of results to return.
    // If 0, the 'n' parameter is not sent to Gerrit.
    N   int

    // Start is the number of results to skip (useful in pagination).
    // To figure out if there are more results, the last AccountInfo struct
    // in the last call to QueryAccounts will have the field MoreAccounts=true.
    // If 0, the 'S' parameter is not sent to Gerrit.
    Start int

    // Fields are optional fields to also return.
    // Example strings include "DETAILS", "ALL_EMAILS".
    // By default, only the account IDs are returned.
    // For a complete list, see:
    // https://gerrit-review.googlesource.com/Documentation/rest-api-accounts.html#query-account
    Fields []string
}

type QueryChangesOpt struct {
    // N is the number of results to return.
    // If 0, the 'n' parameter is not sent to Gerrit.
    N   int

    // Start is the number of results to skip (useful in pagination).
    // To figure out if there are more results, the last ChangeInfo struct
    // in the last call to QueryChanges will have the field MoreAccounts=true.
    // If 0, the 'S' parameter is not sent to Gerrit.
    Start int

    // Fields are optional fields to also return.
    // Example strings include "ALL_REVISIONS", "LABELS", "MESSAGES".
    // For a complete list, see:
    // https://gerrit-review.googlesource.com/Documentation/rest-api-changes.html#change-info
    Fields []string
}

type ReviewInput struct {
    Message string         `json:"message,omitempty"`
    Labels  map[string]int `json:"labels,omitempty"`

    // Comments contains optional per-line comments to post.
    // The map key is a file path (such as "src/foo/bar.go").
    Comments map[string][]CommentInput `json:"comments,omitempty"`

    // Reviewers optionally specifies new reviewers to add to the change.
    Reviewers []ReviewerInput `json:"reviewers,omitempty"`
}

type ReviewerInfo struct {
    AccountInfo
    Approvals map[string]string `json:"approvals"`
}

type ReviewerInput struct {
    // Reviewer is the ID of the account to be added as reviewer.
    // See https://gerrit-review.googlesource.com/Documentation/rest-api-accounts.html#account-id
    Reviewer string `json:"reviewer"`
    State    string `json:"state,omitempty"` // REVIEWER or CC (default: REVIEWER)
}

type ReviewerUpdateInfo struct {
    Updated   TimeStamp    `json:"updated"`
    UpdatedBy *AccountInfo `json:"updated_by"`
    Reviewer  *AccountInfo `json:"reviewer"`
    State     string       // "REVIEWER", "CC", or "REMOVED"
}

type RevisionInfo struct {
    Draft             bool                  `json:"draft"`
    PatchSetNumber    int                   `json:"_number"`
    Created           TimeStamp             `json:"created"`
    Uploader          *AccountInfo          `json:"uploader"`
    Ref               string                `json:"ref"`
    Fetch             map[string]*FetchInfo `json:"fetch"`
    Commit            *CommitInfo           `json:"commit"`
    Files             map[string]*FileInfo  `json:"files"`
    CommitWithFooters string                `json:"commit_with_footers"`
    Kind              string                `json:"kind"`
}

type TagInfo struct {
    Ref       string         `json:"ref"`
    Revision  string         `json:"revision"`
    Object    string         `json:"object,omitempty"`
    Message   string         `json:"message,omitempty"`
    Tagger    *GitPersonInfo `json:"tagger,omitempty"`
    Created   TimeStamp      `json:"created,omitempty"`
    CanDelete bool           `json:"can_delete"`
    WebLinks  []WebLinkInfo  `json:"web_links,omitempty"`
}

type TimeStamp time.Time

type WebLinkInfo struct {
    Name     string `json:"name"`
    URL      string `json:"url"`
    ImageURL string `json:"image_url"`
}