/**
 * Deterministic demo snapshot — the ONLY test fixture, served by the main process
 * when COMMITEA_E2E=1 so the e2e suite (and a no-token first look) runs WITHOUT a
 * live Gitea. It's gitea-shaped on purpose: the reconcile handlers return it and
 * the app renders it through the exact same view builders (schedule, forecast,
 * lifecycle, standup, runway) as real data. There are no screen-level mocks — this
 * is the single source of demo truth. Not shipped behavior; test infrastructure.
 */
import {
  type CapacityMember,
  type DependencyEdge,
  type DirectiveRecord,
  extractLabelFacts,
  type GiteaIssue,
  type GiteaMilestone,
  type LifecycleEvent,
} from '@commitea/core'

const HOST = 'https://gitea.demo.local'
const OWNER = 'teatime'
const REPO = 'commitea'

/** Fixed clock so lifecycle math + forecasts are stable across runs. */
export const DEMO_TODAY = '2026-03-02T09:00:00Z'

interface Seed {
  number: number
  title: string
  labels: string[]
  state?: 'open' | 'closed'
  milestone?: number
  assignee?: string
  events?: LifecycleEvent[]
  closedAt?: string
  createdAt?: string
}

const MILESTONES_RAW = [
  { id: 1, title: 'Beta', description: 'Pilot-ready', dueOn: '2026-03-12T00:00:00Z', state: 'open' as const },
  { id: 2, title: 'v1.0', description: 'General availability', dueOn: '2026-05-01T00:00:00Z', state: 'open' as const },
]

const MREF = (id: number) => {
  const m = MILESTONES_RAW.find((x) => x.id === id)!
  return { id: m.id, title: m.title, dueOn: m.dueOn }
}

// A small, believable backlog for a team building CommiTea. Timelines place issues
// across the five lifecycle columns: bare → diagnosis, labeled → triage, a commit
// ref → steeping, a PR ref → review, closed → done.
const SEEDS: Seed[] = [
  { number: 42, title: 'Fix lifecycle inference on merge events', labels: ['est/3d', 'p/1', 'deadline/hard'], milestone: 1, assignee: 'stephen',
    events: [{ type: 'triage', at: '2026-02-24T10:00:00Z' }, { type: 'commit', at: '2026-02-27T14:00:00Z' }] },
  { number: 41, title: 'Monte Carlo forecast bands on the runway', labels: ['est/5d', 'p/1'], milestone: 1, assignee: 'ana',
    events: [{ type: 'triage', at: '2026-02-23T09:00:00Z' }, { type: 'commit', at: '2026-02-26T09:00:00Z' }, { type: 'pull', at: '2026-03-01T16:00:00Z' }] },
  { number: 40, title: 'Encrypted token store in the main process', labels: ['est/2d', 'p/2'], milestone: 1, assignee: 'stephen',
    events: [{ type: 'triage', at: '2026-02-22T11:00:00Z' }] },
  { number: 39, title: 'Deterministic scheduler with capacity lanes', labels: ['est/8d', 'p/2'], milestone: 1, assignee: 'ana',
    events: [{ type: 'triage', at: '2026-02-20T09:00:00Z' }, { type: 'commit', at: '2026-02-28T09:00:00Z' }] },
  { number: 38, title: 'Standup ritual: overnight drift + today’s plan', labels: ['est/3d', 'p/2'], milestone: 1, assignee: 'stephen',
    events: [{ type: 'triage', at: '2026-02-25T09:00:00Z' }] },
  { number: 37, title: 'Offline write-queue with replay on reconnect', labels: ['est/5d', 'p/3'], milestone: 2, assignee: 'ana',
    events: [{ type: 'triage', at: '2026-02-19T09:00:00Z' }] },
  { number: 36, title: 'Calibration from closed-issue actuals', labels: ['est/3d', 'p/3'], milestone: 2, assignee: 'stephen',
    events: [{ type: 'triage', at: '2026-02-18T09:00:00Z' }] },
  { number: 35, title: 'Reginald: agent loop over query_project', labels: ['est/8d', 'p/2'], milestone: 2, assignee: 'ana',
    events: [{ type: 'triage', at: '2026-02-17T09:00:00Z' }] },
  { number: 34, title: 'Board columns from lifecycle events', labels: [], // bare → diagnosis
    events: [] },
  { number: 33, title: 'Deep-link URIs across orgs', labels: [], // bare → diagnosis
    events: [] },
  // shipped work — closed → done, feeds calibration actuals
  { number: 30, title: 'SQLite cache bootstrap', labels: ['est/3d', 'p/2'], milestone: 1, assignee: 'ana', state: 'closed',
    createdAt: '2026-02-10T09:00:00Z', closedAt: '2026-02-14T17:00:00Z',
    events: [{ type: 'triage', at: '2026-02-10T09:00:00Z' }, { type: 'commit', at: '2026-02-11T09:00:00Z' }, { type: 'pull', at: '2026-02-13T09:00:00Z' }, { type: 'close', at: '2026-02-14T17:00:00Z' }] },
  { number: 29, title: 'Connection + target-repo config', labels: ['est/2d', 'p/2'], milestone: 1, assignee: 'stephen', state: 'closed',
    createdAt: '2026-02-09T09:00:00Z', closedAt: '2026-02-12T15:00:00Z',
    events: [{ type: 'triage', at: '2026-02-09T09:00:00Z' }, { type: 'commit', at: '2026-02-10T09:00:00Z' }, { type: 'close', at: '2026-02-12T15:00:00Z' }] },
  { number: 24, title: 'Unified apply_changes mutation tool', labels: ['est/5d', 'p/1'], milestone: 1, assignee: 'ana', state: 'closed',
    createdAt: '2026-02-05T09:00:00Z', closedAt: '2026-02-11T12:00:00Z',
    events: [{ type: 'triage', at: '2026-02-05T09:00:00Z' }, { type: 'commit', at: '2026-02-06T09:00:00Z' }, { type: 'pull', at: '2026-02-10T09:00:00Z' }, { type: 'close', at: '2026-02-11T12:00:00Z' }] },
]

function toIssue(s: Seed): GiteaIssue {
  const state = s.state ?? 'open'
  return {
    number: s.number,
    title: s.title,
    body: '',
    state,
    labels: s.labels,
    facts: extractLabelFacts(s.labels),
    milestone: s.milestone ? MREF(s.milestone) : null,
    assignee: s.assignee ?? null,
    assignees: s.assignee ? [s.assignee] : [],
    createdAt: s.createdAt ?? '2026-02-20T09:00:00Z',
    updatedAt: DEMO_TODAY,
    closedAt: s.closedAt ?? null,
    url: `${HOST}/${OWNER}/${REPO}/issues/${s.number}`,
  }
}

export const DEMO_ISSUES: GiteaIssue[] = SEEDS.map(toIssue)

export const DEMO_MILESTONES: GiteaMilestone[] = MILESTONES_RAW.map((m) => ({
  id: m.id,
  title: m.title,
  description: m.description,
  dueOn: m.dueOn,
  state: m.state,
  openIssues: DEMO_ISSUES.filter((i) => i.milestone?.id === m.id && i.state === 'open').length,
  closedIssues: DEMO_ISSUES.filter((i) => i.milestone?.id === m.id && i.state === 'closed').length,
}))

// #41 (forecast bands) depends on #39 (scheduler); #42 (lifecycle) depends on #34 (columns).
export const DEMO_DEPS: DependencyEdge[] = [
  { issue: 41, dependsOn: 39 },
  { issue: 42, dependsOn: 34 },
]

export const DEMO_TIMELINES: Record<number, LifecycleEvent[]> = Object.fromEntries(
  SEEDS.map((s) => [s.number, s.events ?? []]),
)

export const DEMO_CAPACITY: CapacityMember[] = [
  { person: 'stephen', focusFactor: 0.6, allocation: 1 },
  { person: 'ana', focusFactor: 1, allocation: 0.8 },
]

export const DEMO_COLLABORATORS: { login: string; name: string }[] = [
  { login: 'stephen', name: 'Stephen Mann' },
  { login: 'ana', name: 'Ana Koval' },
]

export const DEMO_DIRECTIVES: DirectiveRecord[] = [
  { seq: 1, id: 'demo-1', ts: '2026-02-26T10:00:00Z', status: 'accepted', kind: 'reprioritize',
    quote: 'Bump the lifecycle fix — it’s blocking the board.', target: { issue: 42 }, params: { priority: 1 },
    rationale: 'Board columns are wrong until #42 lands.' },
  { seq: 2, id: 'demo-2', ts: '2026-02-24T15:00:00Z', status: 'accepted', kind: 'capacity',
    quote: 'Stephen’s at 60% this sprint — half on support.', params: { person: 'stephen', focusFactor: 0.6 },
    rationale: 'Support rotation.' },
  { seq: 3, id: 'demo-3', ts: '2026-02-22T09:00:00Z', status: 'amended', kind: 'set-deadline',
    quote: 'Beta ships the 12th, hard.', target: { milestone: 1 }, params: { due: '2026-03-12' } },
]

/** The full gitea-shaped snapshot the reconcile handlers return in demo mode. */
export const DEMO_SNAPSHOT = {
  issues: DEMO_ISSUES,
  milestones: DEMO_MILESTONES,
  deps: DEMO_DEPS,
  timelines: DEMO_TIMELINES,
}