import { Field, ID, InputType, Int } from '@nestjs/graphql';
import {
  CustomFieldType,
  IssueLinkType,
  IssuePriority,
  ProjectRole,
  StatusCategory,
} from '@task-stream/api/tracker/domain';
import {
  AutomationActionKind,
  AutomationTriggerKind,
  IssueSort,
} from '@task-stream/api/tracker/application';
import { Type } from 'class-transformer';
import {
  ArrayMaxSize,
  IsArray,
  IsBoolean,
  IsEnum,
  IsInt,
  IsISO8601,
  IsOptional,
  IsString,
  IsUrl,
  IsUUID,
  Matches,
  Max,
  MaxLength,
  Min,
  MinLength,
  ValidateNested,
} from 'class-validator';

/** Ids of statuses, types and areas (checked against the project's settings). */
const SETTING_ID = /^[A-Za-z][A-Za-z0-9_]{0,29}$/;

@InputType()
export class CreateProjectInput {
  @Field({ description: '2-10 chars, e.g. "TS" → tickets TS-1, TS-2...' })
  @Matches(/^[A-Za-z][A-Za-z0-9]{1,9}$/)
  key!: string;

  @Field() @IsString() @MinLength(1) @MaxLength(120) name!: string;

  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsString()
  @MaxLength(5000)
  description?: string | null;

  @Field({
    nullable: true,
    description: 'Readable by anyone, also without signing in',
  })
  @IsOptional()
  @IsBoolean()
  isPublic?: boolean;

  @Field(() => ID, {
    nullable: true,
    description:
      'A project you own or administer to start from: its statuses, transitions, types, areas, custom fields and automation rules are copied',
  })
  @IsOptional()
  @IsUUID()
  templateProjectId?: string | null;
}

@InputType()
export class UpdateProjectInput {
  @Field(() => ID) @IsUUID() projectId!: string;
  @Field({ nullable: true })
  @IsOptional()
  @IsString()
  @MinLength(1)
  @MaxLength(120)
  name?: string;
  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsString()
  @MaxLength(5000)
  description?: string | null;
  @Field({ nullable: true })
  @IsOptional()
  @IsBoolean()
  isPublic?: boolean;
  @Field({
    nullable: true,
    description:
      'Take bug reports and ideas from anyone through the public form (while public)',
  })
  @IsOptional()
  @IsBoolean()
  acceptsProposals?: boolean;
}

@InputType()
export class ProjectMemberInput {
  @Field(() => ID) @IsUUID() projectId!: string;
  @Field(() => ID, { description: 'Pireon user id' })
  @IsString()
  userId!: string;
  @Field(() => ProjectRole, { defaultValue: ProjectRole.MEMBER })
  @IsEnum(ProjectRole)
  role!: ProjectRole;
}

@InputType({ description: "A custom field's value; null or '' clears it" })
export class CustomFieldValueInput {
  @Field() @Matches(SETTING_ID) fieldId!: string;
  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsString()
  @MaxLength(500)
  value?: string | null;
}

@InputType({ isAbstract: true })
abstract class IssueFieldsInput {
  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsString()
  @MaxLength(50000)
  description?: string | null;

  @Field(() => String, { nullable: true, description: 'An area id' })
  @IsOptional()
  @Matches(SETTING_ID)
  area?: string | null;

  @Field(() => IssuePriority, { nullable: true })
  @IsOptional()
  @IsEnum(IssuePriority)
  priority?: IssuePriority;

  @Field(() => [String], { nullable: true })
  @IsOptional()
  @ArrayMaxSize(20)
  @IsString({ each: true })
  @MaxLength(40, { each: true })
  labels?: string[];

  @Field(() => String, {
    nullable: true,
    description: 'Figma frame for UI changes',
  })
  @IsOptional()
  @IsUrl({ protocols: ['https'] })
  figmaUrl?: string | null;

  @Field(() => Int, { nullable: true })
  @IsOptional()
  @IsInt()
  @Min(0)
  @Max(100)
  storyPoints?: number | null;

  @Field(() => String, {
    nullable: true,
    description: 'When work should start (roadmap), YYYY-MM-DD',
  })
  @IsOptional()
  @IsISO8601()
  startDate?: string | null;

  @Field(() => String, { nullable: true }) @IsOptional() @IsISO8601() dueDate?:
    | string
    | null;

  @Field(() => [CustomFieldValueInput], {
    nullable: true,
    description: 'Only the fields to change',
  })
  @IsOptional()
  @IsArray()
  @ArrayMaxSize(30)
  @ValidateNested({ each: true })
  @Type(() => CustomFieldValueInput)
  customFields?: CustomFieldValueInput[];
}

@InputType()
export class CreateIssueInput extends IssueFieldsInput {
  @Field(() => ID) @IsUUID() projectId!: string;
  @Field({ description: 'A ticket type id' })
  @Matches(SETTING_ID)
  type!: string;
  @Field() @IsString() @MinLength(1) @MaxLength(255) title!: string;
  @Field(() => ID, { nullable: true }) @IsOptional() @IsString() assigneeId?:
    | string
    | null;
  @Field(() => ID, { nullable: true }) @IsOptional() @IsUUID() releaseId?:
    | string
    | null;
  @Field(() => ID, {
    nullable: true,
    description: 'Epic or ticket of the same project the new one breaks down',
  })
  @IsOptional()
  @IsUUID()
  parentId?: string | null;
}

@InputType()
export class UpdateIssueInput extends IssueFieldsInput {
  @Field(() => ID) @IsUUID() issueId!: string;
  @Field({ nullable: true })
  @IsOptional()
  @Matches(SETTING_ID)
  type?: string;
  @Field({ nullable: true })
  @IsOptional()
  @IsString()
  @MinLength(1)
  @MaxLength(255)
  title?: string;
}

@InputType()
export class ChangeIssueStatusInput {
  @Field(() => ID) @IsUUID() issueId!: string;
  @Field({ description: 'A status id' })
  @Matches(SETTING_ID)
  status!: string;
  @Field(() => String, {
    nullable: true,
    description: 'Required by statuses with requiresReason',
  })
  @IsOptional()
  @IsString()
  @MaxLength(5000)
  reason?: string | null;
}

const DAY = /^\d{4}-\d{2}-\d{2}$/;

@InputType()
export class CreateSprintInput {
  @Field(() => ID) @IsUUID() projectId!: string;
  @Field() @IsString() @MinLength(1) @MaxLength(80) name!: string;
  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsString()
  @MaxLength(500)
  goal?: string | null;
  @Field({ description: 'YYYY-MM-DD' }) @Matches(DAY) startDate!: string;
  @Field({ description: 'YYYY-MM-DD, included' })
  @Matches(DAY)
  endDate!: string;
}

@InputType()
export class UpdateSprintInput {
  @Field(() => ID) @IsUUID() sprintId!: string;
  @Field({ nullable: true })
  @IsOptional()
  @IsString()
  @MinLength(1)
  @MaxLength(80)
  name?: string;
  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsString()
  @MaxLength(500)
  goal?: string | null;
  @Field({ nullable: true }) @IsOptional() @Matches(DAY) startDate?: string;
  @Field({ nullable: true }) @IsOptional() @Matches(DAY) endDate?: string;
}

@InputType()
export class SavedFilterCriteriaInput {
  @Field(() => [String], { nullable: true })
  @IsOptional()
  @Matches(SETTING_ID, { each: true })
  types?: string[];
  @Field(() => [String], { nullable: true })
  @IsOptional()
  @Matches(SETTING_ID, { each: true })
  areas?: string[];
  @Field(() => [IssuePriority], { nullable: true })
  @IsOptional()
  @IsEnum(IssuePriority, { each: true })
  priorities?: IssuePriority[];
  @Field(() => ID, { nullable: true })
  @IsOptional()
  @IsString()
  assigneeId?: string | null;
  @Field({ nullable: true }) @IsOptional() @IsBoolean() unassigned?: boolean;
  @Field(() => ID, { nullable: true })
  @IsOptional()
  @IsUUID()
  releaseId?: string | null;
  @Field(() => [String], { nullable: true })
  @IsOptional()
  @ArrayMaxSize(20)
  @IsString({ each: true })
  labels?: string[];
  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsString()
  @MaxLength(200)
  search?: string | null;
}

@InputType()
export class SaveFilterInput {
  @Field(() => ID) @IsUUID() projectId!: string;
  @Field() @IsString() @MinLength(1) @MaxLength(60) name!: string;
  @Field({
    defaultValue: false,
    description: 'Visible to the whole project (members, not viewers, share)',
  })
  @IsBoolean()
  shared!: boolean;
  @Field(() => SavedFilterCriteriaInput)
  @ValidateNested()
  @Type(() => SavedFilterCriteriaInput)
  criteria!: SavedFilterCriteriaInput;
}

@InputType()
export class BulkUpdateIssuesInput {
  @Field(() => [ID])
  @IsArray()
  @ArrayMaxSize(100)
  @IsUUID('all', { each: true })
  issueIds!: string[];
  @Field({ nullable: true }) @IsOptional() @Matches(SETTING_ID) status?: string;
  @Field({ nullable: true, description: 'Unassign everything' })
  @IsOptional()
  @IsBoolean()
  unassign?: boolean;
  @Field(() => ID, { nullable: true })
  @IsOptional()
  @IsString()
  assigneeId?: string;
  @Field({ nullable: true, description: 'Back to the backlog' })
  @IsOptional()
  @IsBoolean()
  noSprint?: boolean;
  @Field(() => ID, { nullable: true })
  @IsOptional()
  @IsUUID()
  sprintId?: string;
  @Field({ nullable: true, description: 'Out of their release' })
  @IsOptional()
  @IsBoolean()
  noRelease?: boolean;
  @Field(() => ID, { nullable: true })
  @IsOptional()
  @IsUUID()
  releaseId?: string;
  @Field(() => IssuePriority, { nullable: true })
  @IsOptional()
  @IsEnum(IssuePriority)
  priority?: IssuePriority;
  @Field(() => [String], { nullable: true })
  @IsOptional()
  @ArrayMaxSize(10)
  @IsString({ each: true })
  addLabels?: string[];
}

@InputType()
export class AutomationTriggerInput {
  @Field(() => AutomationTriggerKind)
  @IsEnum(AutomationTriggerKind)
  kind!: AutomationTriggerKind;
  @Field(() => String, { nullable: true })
  @IsOptional()
  @Matches(SETTING_ID)
  status?: string | null;
}

@InputType()
export class AutomationConditionsInput {
  @Field(() => [String], { nullable: true })
  @IsOptional()
  @Matches(SETTING_ID, { each: true })
  types?: string[];
  @Field(() => [IssuePriority], { nullable: true })
  @IsOptional()
  @IsEnum(IssuePriority, { each: true })
  priorities?: IssuePriority[];
  @Field(() => [String], { nullable: true })
  @IsOptional()
  @Matches(SETTING_ID, { each: true })
  areas?: string[];
  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsString()
  @MaxLength(40)
  label?: string | null;
}

@InputType()
export class AutomationActionInput {
  @Field(() => AutomationActionKind)
  @IsEnum(AutomationActionKind)
  kind!: AutomationActionKind;
  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsString()
  @MaxLength(2000)
  value?: string | null;
}

@InputType()
export class CreateAutomationInput {
  @Field(() => ID) @IsUUID() projectId!: string;
  @Field() @IsString() @MinLength(1) @MaxLength(80) name!: string;
  @Field(() => AutomationTriggerInput)
  @ValidateNested()
  @Type(() => AutomationTriggerInput)
  trigger!: AutomationTriggerInput;
  @Field(() => AutomationConditionsInput, { nullable: true })
  @IsOptional()
  @ValidateNested()
  @Type(() => AutomationConditionsInput)
  conditions?: AutomationConditionsInput;
  @Field(() => AutomationActionInput)
  @ValidateNested()
  @Type(() => AutomationActionInput)
  action!: AutomationActionInput;
}

@InputType()
export class CreateWebhookInput {
  @Field(() => ID) @IsUUID() projectId!: string;
  @Field() @IsUrl({ require_tld: false, require_protocol: true }) url!: string;
  @Field(() => [String], { description: 'Event names, family.* or *' })
  @IsArray()
  @ArrayMaxSize(50)
  @IsString({ each: true })
  events!: string[];
}

@InputType()
export class UpdateWebhookInput {
  @Field(() => ID) @IsUUID() webhookId!: string;
  @Field({ nullable: true })
  @IsOptional()
  @IsUrl({ require_tld: false, require_protocol: true })
  url?: string;
  @Field(() => [String], { nullable: true })
  @IsOptional()
  @IsArray()
  @ArrayMaxSize(50)
  @IsString({ each: true })
  events?: string[];
  @Field({ nullable: true }) @IsOptional() @IsBoolean() active?: boolean;
}

@InputType()
export class RankIssueInput {
  @Field(() => ID) @IsUUID() issueId!: string;
  @Field(() => ID, {
    nullable: true,
    description: 'The ticket that ends up right above (null: the top)',
  })
  @IsOptional()
  @IsUUID()
  aboveIssueId?: string | null;
  @Field(() => ID, {
    nullable: true,
    description: 'The ticket that ends up right below (null: the bottom)',
  })
  @IsOptional()
  @IsUUID()
  belowIssueId?: string | null;
}

@InputType()
export class AddChecklistItemInput {
  @Field(() => ID) @IsUUID() issueId!: string;
  @Field() @IsString() @MinLength(1) @MaxLength(300) text!: string;
}

@InputType()
export class UpdateChecklistItemInput {
  @Field(() => ID) @IsUUID() issueId!: string;
  @Field(() => ID) @IsUUID() itemId!: string;
  @Field({ nullable: true })
  @IsOptional()
  @IsString()
  @MinLength(1)
  @MaxLength(300)
  text?: string;
  @Field({ nullable: true }) @IsOptional() @IsBoolean() done?: boolean;
}

@InputType()
export class LinkIssuesInput {
  @Field(() => ID) @IsUUID() issueId!: string;
  @Field(() => IssueLinkType) @IsEnum(IssueLinkType) type!: IssueLinkType;
  @Field(() => ID) @IsUUID() targetIssueId!: string;
}

@InputType()
export class IssueFilterInput {
  @Field(() => ID) @IsUUID() projectId!: string;
  @Field(() => [String], { nullable: true })
  @IsOptional()
  @IsString({ each: true })
  statuses?: string[];
  @Field(() => [StatusCategory], { nullable: true })
  @IsOptional()
  @IsEnum(StatusCategory, { each: true })
  categories?: StatusCategory[];
  @Field(() => [String], { nullable: true })
  @IsOptional()
  @IsString({ each: true })
  types?: string[];
  @Field(() => [String], { nullable: true })
  @IsOptional()
  @IsString({ each: true })
  areas?: string[];
  @Field(() => [IssuePriority], { nullable: true })
  @IsOptional()
  @IsEnum(IssuePriority, { each: true })
  priorities?: IssuePriority[];
  @Field(() => ID, { nullable: true })
  @IsOptional()
  @IsString()
  assigneeId?: string;
  @Field({ nullable: true }) @IsOptional() @IsBoolean() unassigned?: boolean;
  @Field(() => ID, { nullable: true })
  @IsOptional()
  @IsUUID()
  releaseId?: string;
  @Field(() => [String], { nullable: true })
  @IsOptional()
  @IsString({ each: true })
  labels?: string[];
  @Field(() => ID, {
    nullable: true,
    description: 'Only the tickets hanging from this one',
  })
  @IsOptional()
  @IsUUID()
  parentId?: string;
  @Field(() => ID, { nullable: true })
  @IsOptional()
  @IsUUID()
  sprintId?: string;
  @Field({ nullable: true, description: 'Only tickets in no sprint' })
  @IsOptional()
  @IsBoolean()
  noSprint?: boolean;
  @Field({
    nullable: true,
    description: 'Only the tickets I follow (none when anonymous)',
  })
  @IsOptional()
  @IsBoolean()
  watching?: boolean;
  @Field({
    nullable: true,
    description: 'Due on or after this day (YYYY-MM-DD)',
  })
  @IsOptional()
  @Matches(/^\d{4}-\d{2}-\d{2}$/)
  dueFrom?: string;
  @Field({
    nullable: true,
    description: 'Due on or before this day (YYYY-MM-DD)',
  })
  @IsOptional()
  @Matches(/^\d{4}-\d{2}-\d{2}$/)
  dueTo?: string;
  @Field(() => [CustomFieldValueInput], {
    nullable: true,
    description: 'Only tickets holding these custom values',
  })
  @IsOptional()
  @IsArray()
  @ArrayMaxSize(30)
  @ValidateNested({ each: true })
  @Type(() => CustomFieldValueInput)
  customFields?: CustomFieldValueInput[];
  @Field(() => IssueSort, { nullable: true, defaultValue: IssueSort.RECENT })
  @IsOptional()
  @IsEnum(IssueSort)
  sort?: IssueSort;
  @Field({ nullable: true, description: 'Matches key, title or description' })
  @IsOptional()
  @IsString()
  @MaxLength(200)
  search?: string;
}

@InputType()
export class CreateReleaseInput {
  @Field(() => ID) @IsUUID() projectId!: string;
  @Field({ description: 'e.g. v1.4.0' })
  @IsString()
  @MinLength(1)
  @MaxLength(60)
  name!: string;
  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsString()
  @MaxLength(5000)
  description?: string | null;
  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsISO8601()
  targetDate?: string | null;
}

@InputType()
export class UpdateReleaseInput {
  @Field(() => ID) @IsUUID() releaseId!: string;
  @Field({ nullable: true })
  @IsOptional()
  @IsString()
  @MinLength(1)
  @MaxLength(60)
  name?: string;
  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsString()
  @MaxLength(5000)
  description?: string | null;
  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsISO8601()
  targetDate?: string | null;
}

/* Project settings (owners and admins). Values are archived, never deleted. */

@InputType()
export class WorkflowStatusInput {
  @Field() @Matches(SETTING_ID) id!: string;
  @Field() @IsString() @MinLength(1) @MaxLength(40) name!: string;
  @Field(() => StatusCategory)
  @IsEnum(StatusCategory)
  category!: StatusCategory;
  @Field() @IsString() color!: string;
  @Field({ defaultValue: false }) @IsBoolean() requiresReason!: boolean;
  @Field({ defaultValue: false }) @IsBoolean() archived!: boolean;
  @Field(() => Int, {
    nullable: true,
    description: 'Work-in-progress limit (null: none)',
  })
  @IsOptional()
  @IsInt()
  @Min(1)
  @Max(999)
  wipLimit?: number | null;
}

@InputType()
export class StatusTransitionsInput {
  @Field() @Matches(SETTING_ID) from!: string;
  @Field(() => [String])
  @IsArray()
  @ArrayMaxSize(50)
  @Matches(SETTING_ID, { each: true })
  to!: string[];
}

@InputType('IssueTemplateInput')
export class IssueTemplateInput {
  @Field(() => String, { nullable: true })
  @IsOptional()
  @IsString()
  @MaxLength(5000)
  description?: string | null;
  @Field(() => [String], { defaultValue: [] })
  @IsArray()
  @ArrayMaxSize(20)
  @IsString({ each: true })
  @MaxLength(300, { each: true })
  checklist!: string[];
}

@InputType()
export class IssueTypeOptionInput {
  @Field() @Matches(SETTING_ID) id!: string;
  @Field() @IsString() @MinLength(1) @MaxLength(40) name!: string;
  @Field() @IsString() icon!: string;
  @Field() @IsString() color!: string;
  @Field({ defaultValue: false }) @IsBoolean() archived!: boolean;
  @Field(() => IssueTemplateInput, { nullable: true })
  @IsOptional()
  @ValidateNested()
  @Type(() => IssueTemplateInput)
  template?: IssueTemplateInput | null;
}

@InputType()
export class AreaOptionInput {
  @Field() @Matches(SETTING_ID) id!: string;
  @Field() @IsString() @MinLength(1) @MaxLength(40) name!: string;
  @Field({ defaultValue: false }) @IsBoolean() archived!: boolean;
}

@InputType()
export class CustomFieldDefinitionInput {
  @Field() @Matches(SETTING_ID) id!: string;
  @Field() @IsString() @MinLength(1) @MaxLength(40) name!: string;
  @Field(() => CustomFieldType) @IsEnum(CustomFieldType) type!: CustomFieldType;
  @Field(() => [String], {
    defaultValue: [],
    description: 'The choices of a SELECT field',
  })
  @IsArray()
  @ArrayMaxSize(50)
  @IsString({ each: true })
  @MaxLength(60, { each: true })
  options!: string[];
  @Field({ defaultValue: false }) @IsBoolean() archived!: boolean;
}

@InputType({
  description:
    'The whole configuration (replaces the previous one). Statuses go in board order.',
})
export class ProjectSettingsInput {
  @Field(() => [WorkflowStatusInput])
  @IsArray()
  @ArrayMaxSize(50)
  @ValidateNested({ each: true })
  @Type(() => WorkflowStatusInput)
  statuses!: WorkflowStatusInput[];

  @Field(() => [StatusTransitionsInput])
  @IsArray()
  @ArrayMaxSize(50)
  @ValidateNested({ each: true })
  @Type(() => StatusTransitionsInput)
  transitions!: StatusTransitionsInput[];

  @Field(() => [IssueTypeOptionInput])
  @IsArray()
  @ArrayMaxSize(50)
  @ValidateNested({ each: true })
  @Type(() => IssueTypeOptionInput)
  issueTypes!: IssueTypeOptionInput[];

  @Field(() => [AreaOptionInput])
  @IsArray()
  @ArrayMaxSize(50)
  @ValidateNested({ each: true })
  @Type(() => AreaOptionInput)
  areas!: AreaOptionInput[];

  @Field(() => [CustomFieldDefinitionInput], {
    nullable: true,
    description: 'Absent: unchanged. Fields cannot be removed: archive them.',
  })
  @IsOptional()
  @IsArray()
  @ArrayMaxSize(30)
  @ValidateNested({ each: true })
  @Type(() => CustomFieldDefinitionInput)
  customFields?: CustomFieldDefinitionInput[];
}

@InputType({
  description: "A browser's Web Push subscription (PushSubscription.toJSON())",
})
export class PushSubscriptionInput {
  @Field()
  @IsUrl({ protocols: ['https'], require_tld: false })
  endpoint!: string;
  @Field() @IsString() @MaxLength(200) p256dh!: string;
  @Field() @IsString() @MaxLength(100) auth!: string;
}