/**
 * Unified schema file — all tables defined here.
 * drizzle-kit reads this file directly (avoids CJS/ESM extension issues).
 */

import {
  pgTable,
  text,
  timestamp,
  boolean,
  uuid,
  jsonb,
  index,
  uniqueIndex,
  real,
  integer,
  customType,
} from 'drizzle-orm/pg-core';

// ─── Auth (BetterAuth-compatible) ────────────────────────────────────────────

export const users = pgTable('users', {
  id: text('id').primaryKey(),
  name: text('name').notNull(),
  email: text('email').notNull().unique(),
  emailVerified: boolean('email_verified').notNull().default(false),
  image: text('image'),
  role: text('role').notNull().default('member'),
  banned: boolean('banned').default(false),
  banReason: text('ban_reason'),
  banExpires: timestamp('ban_expires', { withTimezone: true }),
  createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
});

export const sessions = pgTable(
  'sessions',
  {
    id: text('id').primaryKey(),
    expiresAt: timestamp('expires_at', { withTimezone: true }).notNull(),
    token: text('token').notNull().unique(),
    ipAddress: text('ip_address'),
    userAgent: text('user_agent'),
    userId: text('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    // Auth hot path: look up all sessions for a user (BetterAuth session list).
    index('sessions_user_id_idx').on(t.userId),
    // Session expiry cleanup queries.
    index('sessions_expires_at_idx').on(t.expiresAt),
  ],
);

export const accounts = pgTable(
  'accounts',
  {
    id: text('id').primaryKey(),
    accountId: text('account_id').notNull(),
    providerId: text('provider_id').notNull(),
    userId: text('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    accessToken: text('access_token'),
    refreshToken: text('refresh_token'),
    idToken: text('id_token'),
    accessTokenExpiresAt: timestamp('access_token_expires_at', { withTimezone: true }),
    refreshTokenExpiresAt: timestamp('refresh_token_expires_at', { withTimezone: true }),
    scope: text('scope'),
    password: text('password'),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    // BetterAuth looks up accounts by (provider_id, account_id) on OAuth callback.
    index('accounts_provider_account_idx').on(t.providerId, t.accountId),
    // Also used in session validation to find linked accounts for a user.
    index('accounts_user_id_idx').on(t.userId),
  ],
);

export const verifications = pgTable('verifications', {
  id: text('id').primaryKey(),
  identifier: text('identifier').notNull(),
  value: text('value').notNull(),
  expiresAt: timestamp('expires_at', { withTimezone: true }).notNull(),
  createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
});

// ─── Teams ───────────────────────────────────────────────────────────────────
// Declared before projects because projects references teams.

export const teams = pgTable('teams', {
  id: uuid('id').primaryKey().defaultRandom(),
  name: text('name').notNull(),
  slug: text('slug').notNull().unique(),
  ownerId: text('owner_id')
    .notNull()
    .references(() => users.id, { onDelete: 'restrict' }),
  managerId: text('manager_id')
    .notNull()
    .references(() => users.id, { onDelete: 'restrict' }),
  createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
});

export const teamMembers = pgTable(
  'team_members',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    teamId: uuid('team_id')
      .notNull()
      .references(() => teams.id, { onDelete: 'cascade' }),
    userId: text('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    role: text('role', { enum: ['manager', 'member'] })
      .notNull()
      .default('member'),
    invitedBy: text('invited_by').references(() => users.id, { onDelete: 'set null' }),
    joinedAt: timestamp('joined_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => ({
    uniq: uniqueIndex('team_members_team_user_idx').on(t.teamId, t.userId),
  }),
);

// ─── Brain ───────────────────────────────────────────────────────────────────
// Declared before Chat because conversations references projects.

export const projects = pgTable('projects', {
  id: uuid('id').primaryKey().defaultRandom(),
  name: text('name').notNull(),
  description: text('description'),
  status: text('status', { enum: ['active', 'paused', 'completed', 'archived'] })
    .notNull()
    .default('active'),
  ownerId: text('owner_id').references(() => users.id, { onDelete: 'set null' }),
  teamId: uuid('team_id').references(() => teams.id, { onDelete: 'cascade' }),
  ownerType: text('owner_type', { enum: ['user', 'team'] })
    .notNull()
    .default('user'),
  metadata: jsonb('metadata'),
  createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
});

export const missions = pgTable(
  'missions',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    name: text('name').notNull(),
    description: text('description'),
    status: text('status', { enum: ['planning', 'active', 'paused', 'completed', 'failed'] })
      .notNull()
      .default('planning'),
    projectId: uuid('project_id').references(() => projects.id, { onDelete: 'set null' }),
    userId: text('user_id').references(() => users.id, { onDelete: 'cascade' }),
    phase: text('phase'),
    milestones: jsonb('milestones').$type<Record<string, unknown>[]>(),
    config: jsonb('config'),
    metadata: jsonb('metadata'),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    index('missions_project_id_idx').on(t.projectId),
    index('missions_user_id_idx').on(t.userId),
  ],
);

export const tasks = pgTable(
  'tasks',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    title: text('title').notNull(),
    description: text('description'),
    status: text('status', {
      enum: ['not-started', 'in-progress', 'blocked', 'done', 'cancelled'],
    })
      .notNull()
      .default('not-started'),
    priority: text('priority', { enum: ['critical', 'high', 'medium', 'low'] })
      .notNull()
      .default('medium'),
    projectId: uuid('project_id').references(() => projects.id, { onDelete: 'set null' }),
    missionId: uuid('mission_id').references(() => missions.id, { onDelete: 'set null' }),
    assignee: text('assignee'),
    tags: jsonb('tags').$type<string[]>(),
    dueDate: timestamp('due_date', { withTimezone: true }),
    metadata: jsonb('metadata'),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    index('tasks_project_id_idx').on(t.projectId),
    index('tasks_mission_id_idx').on(t.missionId),
    index('tasks_status_idx').on(t.status),
  ],
);

// ─── Coord Mission Tasks ─────────────────────────────────────────────────────
// Join table tracking coord-managed tasks within a mission.
// Scoped to userId for multi-tenant RBAC isolation.

export const missionTasks = pgTable(
  'mission_tasks',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    missionId: uuid('mission_id')
      .notNull()
      .references(() => missions.id, { onDelete: 'cascade' }),
    taskId: uuid('task_id').references(() => tasks.id, { onDelete: 'set null' }),
    userId: text('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    status: text('status', {
      enum: ['not-started', 'in-progress', 'blocked', 'done', 'cancelled'],
    })
      .notNull()
      .default('not-started'),
    description: text('description'),
    notes: text('notes'),
    pr: text('pr'),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    index('mission_tasks_mission_id_idx').on(t.missionId),
    index('mission_tasks_task_id_idx').on(t.taskId),
    index('mission_tasks_user_id_idx').on(t.userId),
    index('mission_tasks_status_idx').on(t.status),
  ],
);

export const events = pgTable(
  'events',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    type: text('type').notNull(),
    title: text('title').notNull(),
    description: text('description'),
    date: timestamp('date', { withTimezone: true }).notNull().defaultNow(),
    metadata: jsonb('metadata'),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [index('events_type_idx').on(t.type), index('events_date_idx').on(t.date)],
);

export const agents = pgTable(
  'agents',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    name: text('name').notNull(),
    provider: text('provider').notNull(),
    model: text('model').notNull(),
    status: text('status', { enum: ['idle', 'active', 'error', 'offline'] })
      .notNull()
      .default('idle'),
    projectId: uuid('project_id').references(() => projects.id, { onDelete: 'set null' }),
    ownerId: text('owner_id').references(() => users.id, { onDelete: 'set null' }),
    systemPrompt: text('system_prompt'),
    allowedTools: jsonb('allowed_tools').$type<string[]>(),
    skills: jsonb('skills').$type<string[]>(),
    isSystem: boolean('is_system').notNull().default(false),
    config: jsonb('config'),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    index('agents_project_id_idx').on(t.projectId),
    index('agents_owner_id_idx').on(t.ownerId),
    index('agents_is_system_idx').on(t.isSystem),
  ],
);

export const tickets = pgTable(
  'tickets',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    title: text('title').notNull(),
    description: text('description'),
    status: text('status', { enum: ['open', 'in-progress', 'resolved', 'closed'] })
      .notNull()
      .default('open'),
    priority: text('priority', { enum: ['critical', 'high', 'medium', 'low'] })
      .notNull()
      .default('medium'),
    source: text('source'),
    metadata: jsonb('metadata'),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [index('tickets_status_idx').on(t.status)],
);

export const appreciations = pgTable('appreciations', {
  id: uuid('id').primaryKey().defaultRandom(),
  fromUser: text('from_user'),
  toUser: text('to_user'),
  message: text('message').notNull(),
  metadata: jsonb('metadata'),
  createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
});

// ─── Chat ────────────────────────────────────────────────────────────────────

export const conversations = pgTable(
  'conversations',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    title: text('title'),
    userId: text('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    projectId: uuid('project_id').references(() => projects.id, { onDelete: 'set null' }),
    agentId: uuid('agent_id').references(() => agents.id, { onDelete: 'set null' }),
    archived: boolean('archived').notNull().default(false),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    // Compound index for the most common query: conversations for a user filtered by archived.
    index('conversations_user_archived_idx').on(t.userId, t.archived),
    index('conversations_project_id_idx').on(t.projectId),
    index('conversations_agent_id_idx').on(t.agentId),
  ],
);

export const messages = pgTable(
  'messages',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    conversationId: uuid('conversation_id')
      .notNull()
      .references(() => conversations.id, { onDelete: 'cascade' }),
    role: text('role', { enum: ['user', 'assistant', 'system'] }).notNull(),
    content: text('content').notNull(),
    metadata: jsonb('metadata'),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [index('messages_conversation_id_idx').on(t.conversationId)],
);

// ─── pgvector custom type ───────────────────────────────────────────────────

const vector = customType<{ data: number[]; driverParam: string; config: { dimensions: number } }>({
  dataType(config) {
    return `vector(${config?.dimensions ?? 1536})`;
  },
  fromDriver(value: unknown): number[] {
    const str = value as string;
    return str
      .slice(1, -1)
      .split(',')
      .map((v) => Number(v));
  },
  toDriver(value: number[]): string {
    return `[${value.join(',')}]`;
  },
});

// ─── Memory ─────────────────────────────────────────────────────────────────

export const preferences = pgTable(
  'preferences',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    userId: text('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    key: text('key').notNull(),
    value: jsonb('value').notNull(),
    category: text('category', {
      enum: ['communication', 'coding', 'workflow', 'appearance', 'general'],
    })
      .notNull()
      .default('general'),
    source: text('source'),
    mutable: boolean('mutable').notNull().default(true),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    index('preferences_user_id_idx').on(t.userId),
    // Unique constraint enables single-round-trip INSERT … ON CONFLICT DO UPDATE.
    uniqueIndex('preferences_user_key_idx').on(t.userId, t.key),
  ],
);

export const insights = pgTable(
  'insights',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    userId: text('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    content: text('content').notNull(),
    embedding: vector('embedding', { dimensions: 1536 }),
    source: text('source', {
      enum: ['agent', 'user', 'summarization', 'system'],
    })
      .notNull()
      .default('agent'),
    category: text('category', {
      enum: ['decision', 'learning', 'preference', 'fact', 'pattern', 'general'],
    })
      .notNull()
      .default('general'),
    relevanceScore: real('relevance_score').notNull().default(1.0),
    metadata: jsonb('metadata'),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
    decayedAt: timestamp('decayed_at', { withTimezone: true }),
  },
  (t) => [
    index('insights_user_id_idx').on(t.userId),
    index('insights_category_idx').on(t.category),
    index('insights_relevance_idx').on(t.relevanceScore),
  ],
);

// ─── Agent Logs ─────────────────────────────────────────────────────────────

export const agentLogs = pgTable(
  'agent_logs',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    sessionId: text('session_id').notNull(),
    userId: text('user_id').references(() => users.id, { onDelete: 'set null' }),
    level: text('level', { enum: ['debug', 'info', 'warn', 'error'] })
      .notNull()
      .default('info'),
    category: text('category', {
      enum: ['decision', 'tool_use', 'learning', 'error', 'general'],
    })
      .notNull()
      .default('general'),
    content: text('content').notNull(),
    metadata: jsonb('metadata'),
    tier: text('tier', { enum: ['hot', 'warm', 'cold'] })
      .notNull()
      .default('hot'),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    summarizedAt: timestamp('summarized_at', { withTimezone: true }),
    archivedAt: timestamp('archived_at', { withTimezone: true }),
  },
  (t) => [
    // Compound index for session log queries (most common: session + tier filter).
    index('agent_logs_session_tier_idx').on(t.sessionId, t.tier),
    index('agent_logs_user_id_idx').on(t.userId),
    // Used by summarization cron to find hot logs older than a cutoff.
    index('agent_logs_tier_created_at_idx').on(t.tier, t.createdAt),
  ],
);

// ─── Skills ─────────────────────────────────────────────────────────────────

export const skills = pgTable(
  'skills',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    name: text('name').notNull().unique(),
    description: text('description'),
    version: text('version'),
    source: text('source', { enum: ['builtin', 'community', 'custom'] })
      .notNull()
      .default('custom'),
    config: jsonb('config'),
    enabled: boolean('enabled').notNull().default(true),
    installedBy: text('installed_by').references(() => users.id, { onDelete: 'set null' }),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [index('skills_enabled_idx').on(t.enabled)],
);

// ─── Routing Rules ──────────────────────────────────────────────────────────

export const routingRules = pgTable(
  'routing_rules',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    /** Human-readable rule name */
    name: text('name').notNull(),
    /** Lower number = higher priority; unique per scope */
    priority: integer('priority').notNull(),
    /** 'system' rules apply globally; 'user' rules are scoped to a specific user */
    scope: text('scope', { enum: ['system', 'user'] })
      .notNull()
      .default('system'),
    /** Null for system-scoped rules; FK to users.id for user-scoped rules */
    userId: text('user_id').references(() => users.id, { onDelete: 'cascade' }),
    /** Array of condition objects that must all match for the rule to fire */
    conditions: jsonb('conditions').notNull().$type<Record<string, unknown>[]>(),
    /** Routing action to take when all conditions are satisfied */
    action: jsonb('action').notNull().$type<Record<string, unknown>>(),
    /** Whether this rule is active */
    enabled: boolean('enabled').notNull().default(true),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    // Lookup by scope + priority for ordered rule evaluation
    index('routing_rules_scope_priority_idx').on(t.scope, t.priority),
    // User-scoped rules lookup
    index('routing_rules_user_id_idx').on(t.userId),
    // Filter enabled rules efficiently
    index('routing_rules_enabled_idx').on(t.enabled),
  ],
);

// ─── Provider Credentials ────────────────────────────────────────────────────

export const providerCredentials = pgTable(
  'provider_credentials',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    userId: text('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    provider: text('provider').notNull(),
    credentialType: text('credential_type', { enum: ['api_key', 'oauth_token'] }).notNull(),
    encryptedValue: text('encrypted_value').notNull(),
    refreshToken: text('refresh_token'),
    expiresAt: timestamp('expires_at', { withTimezone: true }),
    metadata: jsonb('metadata'),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    // Unique constraint: one credential entry per user per provider
    uniqueIndex('provider_credentials_user_provider_idx').on(t.userId, t.provider),
    index('provider_credentials_user_id_idx').on(t.userId),
  ],
);

// ─── Summarization Jobs ─────────────────────────────────────────────────────

export const summarizationJobs = pgTable(
  'summarization_jobs',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    status: text('status', { enum: ['pending', 'running', 'completed', 'failed'] })
      .notNull()
      .default('pending'),
    logsProcessed: integer('logs_processed').notNull().default(0),
    insightsCreated: integer('insights_created').notNull().default(0),
    errorMessage: text('error_message'),
    startedAt: timestamp('started_at', { withTimezone: true }),
    completedAt: timestamp('completed_at', { withTimezone: true }),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [index('summarization_jobs_status_idx').on(t.status)],
);