import type { Project, Task, ApprovalRecord, Run, Event, TaskResult, Autonomy } from '../model/types.js';
import type { Complexity } from '../model/complexity.js';
import type { TaskStatus, GateKind } from '../model/status.js';
import type { RunKind, RunStatus, EventType } from '../model/types.js';

/** SQLite 行类型（snake_case，文本/数字原样） */
export interface ProjectRow {
  id: string; name: string; repo_path: string; default_branch: string;
  verify_cmd: string | null; autonomy: string; model: string | null;
  concurrency: number; max_retries: number; timeout_ms: number;
  status: string; created_at: string;
  last_sync_at: string | null; logo: string | null; sort_order: number;
  checks: string | null; auto_approve_plan: number; auto_approve_exec: number;
  budget_usd: number | null; budget_period: string | null;
  agent_rules: string | null;
}
export interface TaskRow {
  id: string; project_id: string; parent_id: string | null; depth: number;
  title: string; complexity: string; status: string; priority: number;
  deps: string; plan: string | null; spec: string | null; operations: string | null;
  result: string | null; assignee: string | null; retry_baseline: number;
  next_eligible_at: string | null;
  created_at: string; updated_at: string;
  source_ref: string | null;
  attachments: string | null;
  last_run_error?: string | null;  // pendingApprovals 扩展字段（subquery）
}
export interface ApprovalRow {
  id: string; task_id: string; gate: string; action: string;
  actor: string; reason: string | null; at: string;
}
export interface RunRow {
  id: string; task_id: string; kind: string; worktree: string | null; branch: string | null;
  status: string; started_at: string; ended_at: string | null;
  transcript_ref: string | null; claude_session_id: string | null; error: string | null;
  worker_pid: number | null; last_seq: number;
  usage: string | null; cost_usd: number | null;
}
export interface EventRow {
  id: string; project_id: string; task_id: string | null; type: string; payload: string; at: string;
}

export function rowToProject(r: ProjectRow): Project {
  return {
    id: r.id, name: r.name, repoPath: r.repo_path, defaultBranch: r.default_branch,
    verifyCmd: r.verify_cmd, autonomy: r.autonomy as Autonomy, model: r.model,
    concurrency: r.concurrency, maxRetries: r.max_retries ?? 2, timeoutMs: r.timeout_ms ?? 1_800_000,
    status: r.status as Project['status'], createdAt: r.created_at,
    lastSyncAt: r.last_sync_at, logo: r.logo, sortOrder: r.sort_order,
    checks: r.checks ?? null,
    autoApprovePlan: Boolean(r.auto_approve_plan),
    autoApproveExec: Boolean(r.auto_approve_exec),
    budgetUsd: r.budget_usd ?? null,
    budgetPeriod: (r.budget_period === 'day' ? 'day' : 'month'),
    agentRules: r.agent_rules ?? null,
  };
}

/** 旧 result JSON 兜底：summary/verdict/securitySummary/securityVerdict 是后加字段，老数据缺省补 null */
function parseResult(json: string): TaskResult {
  const raw = JSON.parse(json) as Partial<TaskResult>;
  const verdict = (v: unknown): TaskResult['verdict'] => (v === 'approve' || v === 'reject' ? v : null);
  return {
    branch: raw.branch ?? null,
    worktree: raw.worktree ?? null,
    diffSummary: raw.diffSummary ?? null,
    commits: raw.commits ?? [],
    prUrl: raw.prUrl ?? null,
    summary: raw.summary ?? null,
    verdict: verdict(raw.verdict),
    securitySummary: raw.securitySummary ?? null,
    securityVerdict: verdict(raw.securityVerdict),
    mergeTaskId: raw.mergeTaskId ?? null,
  };
}

export function rowToTask(r: TaskRow, approvals: ApprovalRecord[] = []): Task {
  return {
    id: r.id, projectId: r.project_id, parentId: r.parent_id, depth: r.depth,
    title: r.title, complexity: r.complexity as Complexity, status: r.status as TaskStatus,
    priority: r.priority, deps: JSON.parse(r.deps) as string[],
    plan: r.plan, spec: r.spec, operations: r.operations,
    approvals, result: r.result ? parseResult(r.result) : null,
    assignee: r.assignee as Task['assignee'], retryBaseline: r.retry_baseline ?? 0,
    nextEligibleAt: r.next_eligible_at ?? null,
    lastRunError: r.last_run_error ?? null,
    attachments: r.attachments ? (JSON.parse(r.attachments) as Task['attachments']) : undefined,
    createdAt: r.created_at, updatedAt: r.updated_at,
  };
}

export function rowToApproval(r: ApprovalRow): ApprovalRecord {
  return {
    gate: r.gate as GateKind, action: r.action as ApprovalRecord['action'],
    actor: r.actor, reason: r.reason, at: r.at,
  };
}

export function rowToRun(r: RunRow): Run {
  return {
    id: r.id, taskId: r.task_id, kind: r.kind as RunKind,
    worktree: r.worktree, branch: r.branch, status: r.status as RunStatus,
    startedAt: r.started_at, endedAt: r.ended_at,
    transcriptRef: r.transcript_ref, claudeSessionId: r.claude_session_id, error: r.error,
    workerPid: r.worker_pid ?? null, lastSeq: r.last_seq ?? 0,
    usage: r.usage ? (JSON.parse(r.usage) as Run['usage']) : null,
    costUsd: r.cost_usd ?? null,
  };
}

export function rowToEvent(r: EventRow): Event {
  return {
    id: r.id, projectId: r.project_id, taskId: r.task_id,
    type: r.type as EventType, payload: JSON.parse(r.payload) as Record<string, unknown>, at: r.at,
  };
}