package gitlab

import (
	"strings"
	"time"
)

type customTime struct {
	time.Time
}

func (t *customTime) UnmarshalJSON(b []byte) (err error) {
	layout := []string{
		"2006-01-02 15:04:05 MST",
		"2006-01-02 15:04:05 Z07:00",
		"2006-01-02 15:04:05 Z0700",
		time.RFC3339,
	}
	s := strings.Trim(string(b), "\"")
	if s == "null" {
		t.Time = time.Time{}
		return
	}
	for _, l := range layout {
		t.Time, err = time.Parse(l, s)
		if err == nil {
			break
		}
	}
	return
}

// IssueEventPayload contains the information for GitLab's issue event
type IssueEventPayload struct {
	ObjectKind       string           `json:"object_kind"`
	User             User             `json:"user"`
	Project          Project          `json:"project"`
	Repository       Repository       `json:"repository"`
	ObjectAttributes ObjectAttributes `json:"object_attributes"`
	Assignee         Assignee         `json:"assignee"`
	Changes          Changes          `json:"changes"`
}

// ConfidentialIssueEventPayload contains the information for GitLab's confidential issue event
type ConfidentialIssueEventPayload struct {
	// The data for confidential issues is currently the same as normal issues,
	// so we can just embed the normal issue payload type here.
	IssueEventPayload
}

// MergeRequestEventPayload contains the information for GitLab's merge request event
type MergeRequestEventPayload struct {
	ObjectKind       string           `json:"object_kind"`
	User             User             `json:"user"`
	ObjectAttributes ObjectAttributes `json:"object_attributes"`
	Changes          Changes          `json:"changes"`
	Project          Project          `json:"project"`
	Repository       Repository       `json:"repository"`
	Labels           []Label          `json:"labels"`
}

// PushEventPayload contains the information for GitLab's push event
type PushEventPayload struct {
	ObjectKind        string     `json:"object_kind"`
	Before            string     `json:"before"`
	After             string     `json:"after"`
	Ref               string     `json:"ref"`
	CheckoutSHA       string     `json:"checkout_sha"`
	UserID            int64      `json:"user_id"`
	UserName          string     `json:"user_name"`
	UserUsername      string     `json:"user_username"`
	UserEmail         string     `json:"user_email"`
	UserAvatar        string     `json:"user_avatar"`
	ProjectID         int64      `json:"project_id"`
	Project           Project    `json:"Project"`
	Repository        Repository `json:"repository"`
	Commits           []Commit   `json:"commits"`
	TotalCommitsCount int64      `json:"total_commits_count"`
}

// TagEventPayload contains the information for GitLab's tag push event
type TagEventPayload struct {
	ObjectKind        string     `json:"object_kind"`
	Before            string     `json:"before"`
	After             string     `json:"after"`
	Ref               string     `json:"ref"`
	CheckoutSHA       string     `json:"checkout_sha"`
	UserID            int64      `json:"user_id"`
	UserName          string     `json:"user_name"`
	UserUsername      string     `json:"user_username"`
	UserAvatar        string     `json:"user_avatar"`
	ProjectID         int64      `json:"project_id"`
	Project           Project    `json:"Project"`
	Repository        Repository `json:"repository"`
	Commits           []Commit   `json:"commits"`
	TotalCommitsCount int64      `json:"total_commits_count"`
}

// WikiPageEventPayload contains the information for GitLab's wiki created/updated event
type WikiPageEventPayload struct {
	ObjectKind       string           `json:"object_kind"`
	User             User             `json:"user"`
	Project          Project          `json:"project"`
	Wiki             Wiki             `json:"wiki"`
	ObjectAttributes ObjectAttributes `json:"object_attributes"`
}

// PipelineEventPayload contains the information for GitLab's pipeline status change event
type PipelineEventPayload struct {
	ObjectKind       string                   `json:"object_kind"`
	User             User                     `json:"user"`
	Project          Project                  `json:"project"`
	Commit           Commit                   `json:"commit"`
	ObjectAttributes PipelineObjectAttributes `json:"object_attributes"`
	Jobs             []Job                    `json:"jobs"`
}

// CommentEventPayload contains the information for GitLab's comment event
type CommentEventPayload struct {
	ObjectKind       string           `json:"object_kind"`
	User             User             `json:"user"`
	ProjectID        int64            `json:"project_id"`
	Project          Project          `json:"project"`
	Repository       Repository       `json:"repository"`
	ObjectAttributes ObjectAttributes `json:"object_attributes"`
	MergeRequest     MergeRequest     `json:"merge_request"`
	Commit           Commit           `json:"commit"`
	Issue            Issue            `json:"issue"`
	Snippet          Snippet          `json:"snippet"`
}

// BuildEventPayload contains the information for GitLab's build status change event
type BuildEventPayload struct {
	ObjectKind        string      `json:"object_kind"`
	Ref               string      `json:"ref"`
	Tag               bool        `json:"tag"`
	BeforeSHA         string      `json:"before_sha"`
	SHA               string      `json:"sha"`
	BuildID           int64       `json:"build_id"`
	BuildName         string      `json:"build_name"`
	BuildStage        string      `json:"build_stage"`
	BuildStatus       string      `json:"build_status"`
	BuildStartedAt    customTime  `json:"build_started_at"`
	BuildFinishedAt   customTime  `json:"build_finished_at"`
	BuildDuration     int64       `json:"build_duration"`
	BuildAllowFailure bool        `json:"build_allow_failure"`
	ProjectID         int64       `json:"project_id"`
	ProjectName       string      `json:"project_name"`
	User              User        `json:"user"`
	Commit            BuildCommit `json:"commit"`
	Repository        Repository  `json:"repository"`
}

// JobEventPayload contains the information for GitLab's Job status change
type JobEventPayload struct {
	ObjectKind       string      `json:"object_kind"`
	Ref              string      `json:"ref"`
	Tag              bool        `json:"tag"`
	BeforeSHA        string      `json:"before_sha"`
	SHA              string      `json:"sha"`
	JobID            int64       `json:"Job_id"`
	JobName          string      `json:"Job_name"`
	JobStage         string      `json:"Job_stage"`
	JobStatus        string      `json:"Job_status"`
	JobStartedAt     customTime  `json:"Job_started_at"`
	JobFinishedAt    customTime  `json:"Job_finished_at"`
	JobDuration      int64       `json:"Job_duration"`
	Job              bool        `json:"Job"`
	JobFailureReason string      `json:"job_failure_reason"`
	ProjectID        int64       `json:"project_id"`
	ProjectName      string      `json:"project_name"`
	User             User        `json:"user"`
	Commit           BuildCommit `json:"commit"`
	Repository       Repository  `json:"repository"`
}

// SystemHookPayload contains the ObjectKind to match with real hook events
type SystemHookPayload struct {
	ObjectKind string `json:"object_kind"`
	EventName  string `json:"event_name"`
}

// Issue contains all of the GitLab issue information
type Issue struct {
	ID          int64      `json:"id"`
	Title       string     `json:"title"`
	AssigneeID  int64      `json:"assignee_id"`
	AuthorID    int64      `json:"author_id"`
	ProjectID   int64      `json:"project_id"`
	CreatedAt   customTime `json:"created_at"`
	UpdatedAt   customTime `json:"updated_at"`
	Position    int64      `json:"position"`
	BranchName  string     `json:"branch_name"`
	Description string     `json:"description"`
	MilestoneID int64      `json:"milestone_id"`
	State       string     `json:"state"`
	IID         int64      `json:"iid"`
}

// Job contains all of the GitLab job information
type Job struct {
	ID            int64         `json:"id"`
	Stage         string        `json:"stage"`
	Name          string        `json:"name"`
	Status        string        `json:"status"`
	CreatedAt     customTime    `json:"created_at"`
	StartedAt     customTime    `json:"started_at"`
	FinishedAt    customTime    `json:"finished_at"`
	When          string        `json:"when"`
	Manual        bool          `json:"manual"`
	User          User          `json:"user"`
	Runner        Runner        `json:"runner"`
	ArtifactsFile ArtifactsFile `json:"artifactsfile"`
}

// Runner represents a runner agent
type Runner struct {
	ID          int64  `json:"id"`
	Description string `json:"description"`
	Active      bool   `json:"active"`
	IsShared    bool   `json:"is_shared"`
}

// ArtifactsFile contains all of the GitLab artifact information
type ArtifactsFile struct {
	Filename string `json:"filename"`
	Size     string `json:"size"`
}

// Wiki contains all of the GitLab wiki information
type Wiki struct {
	WebURL            string `json:"web_url"`
	GitSSHURL         string `json:"git_ssh_url"`
	GitHTTPURL        string `json:"git_http_url"`
	PathWithNamespace string `json:"path_with_namespace"`
	DefaultBranch     string `json:"default_branch"`
}

// Commit contains all of the GitLab commit information
type Commit struct {
	ID        string     `json:"id"`
	Message   string     `json:"message"`
	Timestamp customTime `json:"timestamp"`
	URL       string     `json:"url"`
	Author    Author     `json:"author"`
	Added     []string   `json:"added"`
	Modified  []string   `json:"modified"`
	Removed   []string   `json:"removed"`
}

// BuildCommit contains all of the GitLab build commit information
type BuildCommit struct {
	ID          int64      `json:"id"`
	SHA         string     `json:"sha"`
	Message     string     `json:"message"`
	AuthorName  string     `json:"auuthor_name"`
	AuthorEmail string     `json:"author_email"`
	Status      string     `json:"status"`
	Duration    int64      `json:"duration"`
	StartedAt   customTime `json:"started_at"`
	FinishedAt  customTime `json:"finished_at"`
}

// Snippet contains all of the GitLab snippet information
type Snippet struct {
	ID              int64      `json:"id"`
	Title           string     `json:"title"`
	Content         string     `json:"content"`
	AuthorID        int64      `json:"author_id"`
	ProjectID       int64      `json:"project_id"`
	CreatedAt       customTime `json:"created_at"`
	UpdatedAt       customTime `json:"updated_at"`
	FileName        string     `json:"file_name"`
	ExpiresAt       customTime `json:"expires_at"`
	Type            string     `json:"type"`
	VisibilityLevel int64      `json:"visibility_level"`
}

// User contains all of the GitLab user information
type User struct {
	Name      string `json:"name"`
	UserName  string `json:"username"`
	AvatarURL string `json:"avatar_url"`
}

// Project contains all of the GitLab project information
type Project struct {
	ID                int64  `json:"id"`
	Name              string `json:"name"`
	Description       string `json:"description"`
	WebURL            string `json:"web_url"`
	AvatarURL         string `json:"avatar_url"`
	GitSSSHURL        string `json:"git_ssh_url"`
	GitHTTPURL        string `json:"git_http_url"`
	Namespace         string `json:"namespace"`
	VisibilityLevel   int64  `json:"visibility_level"`
	PathWithNamespace string `json:"path_with_namespace"`
	DefaultBranch     string `json:"default_branch"`
	Homepage          string `json:"homepage"`
	URL               string `json:"url"`
	SSHURL            string `json:"ssh_url"`
	HTTPURL           string `json:"http_url"`
}

// Repository contains all of the GitLab repository information
type Repository struct {
	Name        string `json:"name"`
	URL         string `json:"url"`
	Description string `json:"description"`
	Homepage    string `json:"homepage"`
}

// ObjectAttributes contains all of the GitLab object attributes information
type ObjectAttributes struct {
	ID               int64      `json:"id"`
	Title            string     `json:"title"`
	AssigneeID       int64      `json:"assignee_id"`
	AuthorID         int64      `json:"author_id"`
	ProjectID        int64      `json:"project_id"`
	CreatedAt        customTime `json:"created_at"`
	UpdatedAt        customTime `json:"updated_at"`
	ChangePosition   Position   `json:"change_position"`
	OriginalPosition Position   `json:"original_position"`
	Position         Position   `json:"position"`
	BranchName       string     `json:"branch_name"`
	Description      string     `json:"description"`
	MilestoneID      int64      `json:"milestone_id"`
	State            string     `json:"state"`
	IID              int64      `json:"iid"`
	URL              string     `json:"url"`
	Action           string     `json:"action"`
	TargetBranch     string     `json:"target_branch"`
	SourceBranch     string     `json:"source_branch"`
	SourceProjectID  int64      `json:"source_project_id"`
	TargetProjectID  int64      `json:"target_project_id"`
	StCommits        string     `json:"st_commits"`
	MergeStatus      string     `json:"merge_status"`
	Content          string     `json:"content"`
	Format           string     `json:"format"`
	Message          string     `json:"message"`
	Slug             string     `json:"slug"`
	Ref              string     `json:"ref"`
	Tag              bool       `json:"tag"`
	SHA              string     `json:"sha"`
	BeforeSHA        string     `json:"before_sha"`
	Status           string     `json:"status"`
	Stages           []string   `json:"stages"`
	Duration         int64      `json:"duration"`
	Note             string     `json:"note"`
	NotebookType     string     `json:"noteable_type"`
	At               customTime `json:"attachment"`
	LineCode         string     `json:"line_code"`
	CommitID         string     `json:"commit_id"`
	NoteableID       int64      `json:"noteable_id"`
	System           bool       `json:"system"`
	WorkInProgress   bool       `json:"work_in_progress"`
	StDiffs          []StDiff   `json:"st_diffs"`
	Source           Source     `json:"source"`
	Target           Target     `json:"target"`
	LastCommit       LastCommit `json:"last_commit"`
	Assignee         Assignee   `json:"assignee"`
}

// PipelineObjectAttributes contains pipeline specific GitLab object attributes information
type PipelineObjectAttributes struct {
	ID         int64      `json:"id"`
	Ref        string     `json:"ref"`
	Tag        bool       `json:"tag"`
	SHA        string     `json:"sha"`
	BeforeSHA  string     `json:"before_sha"`
	Source     string     `json:"source"`
	Status     string     `json:"status"`
	Stages     []string   `json:"stages"`
	CreatedAt  customTime `json:"created_at"`
	FinishedAt customTime `json:"finished_at"`
	Duration   int64      `json:"duration"`
}

// Position defines a specific location, identified by paths line numbers and
// image coordinates, within a specific diff, identified by start, head and
// base commit ids.
//
// Text position will have: new_line and old_line
// Image position will have: width, height, x, y
type Position struct {
	BaseSHA      string `json:"base_sha"`
	StartSHA     string `json:"start_sha"`
	HeadSHA      string `json:"head_sha"`
	OldPath      string `json:"old_path"`
	NewPath      string `json:"new_path"`
	PositionType string `json:"position_type"`
	OldLine      int64  `json:"old_line"`
	NewLine      int64  `json:"new_line"`
	Width        int64  `json:"width"`
	Height       int64  `json:"height"`
	X            int64  `json:"x"`
	Y            int64  `json:"y"`
}

// MergeRequest contains all of the GitLab merge request information
type MergeRequest struct {
	ID              int64      `json:"id"`
	TargetBranch    string     `json:"target_branch"`
	SourceBranch    string     `json:"source_branch"`
	SourceProjectID int64      `json:"source_project_id"`
	AssigneeID      int64      `json:"assignee_id"`
	AuthorID        int64      `json:"author_id"`
	Title           string     `json:"title"`
	CreatedAt       customTime `json:"created_at"`
	UpdatedAt       customTime `json:"updated_at"`
	MilestoneID     int64      `json:"milestone_id"`
	State           string     `json:"state"`
	MergeStatus     string     `json:"merge_status"`
	TargetProjectID int64      `json:"target_project_id"`
	IID             int64      `json:"iid"`
	Description     string     `json:"description"`
	Position        int64      `json:"position"`
	LockedAt        customTime `json:"locked_at"`
	Source          Source     `json:"source"`
	Target          Target     `json:"target"`
	LastCommit      LastCommit `json:"last_commit"`
	WorkInProgress  bool       `json:"work_in_progress"`
	Assignee        Assignee   `json:"assignee"`
}

// Assignee contains all of the GitLab assignee information
type Assignee struct {
	Name      string `json:"name"`
	Username  string `json:"username"`
	AvatarURL string `json:"avatar_url"`
}

// StDiff contains all of the GitLab diff information
type StDiff struct {
	Diff        string `json:"diff"`
	NewPath     string `json:"new_path"`
	OldPath     string `json:"old_path"`
	AMode       string `json:"a_mode"`
	BMode       string `json:"b_mode"`
	NewFile     bool   `json:"new_file"`
	RenamedFile bool   `json:"renamed_file"`
	DeletedFile bool   `json:"deleted_file"`
}

// Source contains all of the GitLab source information
type Source struct {
	Name              string `json:"name"`
	Description       string `json:"description"`
	WebURL            string `json:"web_url"`
	AvatarURL         string `json:"avatar_url"`
	GitSSHURL         string `json:"git_ssh_url"`
	GitHTTPURL        string `json:"git_http_url"`
	Namespace         string `json:"namespace"`
	VisibilityLevel   int64  `json:"visibility_level"`
	PathWithNamespace string `json:"path_with_namespace"`
	DefaultBranch     string `json:"default_branch"`
	Homepage          string `json:"homepage"`
	URL               string `json:"url"`
	SSHURL            string `json:"ssh_url"`
	HTTPURL           string `json:"http_url"`
}

// Target contains all of the GitLab target information
type Target struct {
	Name              string `json:"name"`
	Description       string `json:"description"`
	WebURL            string `json:"web_url"`
	AvatarURL         string `json:"avatar_url"`
	GitSSHURL         string `json:"git_ssh_url"`
	GitHTTPURL        string `json:"git_http_url"`
	Namespace         string `json:"namespace"`
	VisibilityLevel   int64  `json:"visibility_level"`
	PathWithNamespace string `json:"path_with_namespace"`
	DefaultBranch     string `json:"default_branch"`
	Homepage          string `json:"homepage"`
	URL               string `json:"url"`
	SSHURL            string `json:"ssh_url"`
	HTTPURL           string `json:"http_url"`
}

// LastCommit contains all of the GitLab last commit information
type LastCommit struct {
	ID        string     `json:"id"`
	Message   string     `json:"message"`
	Timestamp customTime `json:"timestamp"`
	URL       string     `json:"url"`
	Author    Author     `json:"author"`
}

// Author contains all of the GitLab author information
type Author struct {
	Name  string `json:"name"`
	Email string `json:"email"`
}

// Changes contains all changes associated with a GitLab issue or MR
type Changes struct {
	LabelChanges LabelChanges `json:"labels"`
}

// LabelChanges contains changes in labels assocatiated with a GitLab issue or MR
type LabelChanges struct {
	Previous []Label `json:"previous"`
	Current  []Label `json:"current"`
}

// Label contains all of the GitLab label information
type Label struct {
	ID          int64      `json:"id"`
	Title       string     `json:"title"`
	Color       string     `json:"color"`
	ProjectID   int64      `json:"project_id"`
	CreatedAt   customTime `json:"created_at"`
	UpdatedAt   customTime `json:"updated_at"`
	Template    bool       `json:"template"`
	Description string     `json:"description"`
	Type        string     `json:"type"`
	GroupID     int64      `json:"group_id"`
}