import { describe, it, expect } from 'vitest'

/**
 * Review-Plan Job Tests
 *
 * Tests for the IDEA_REVIEW_PLAN job kind and review-log schema validation.
 */

// Sample review-log structure for testing
const sampleReviewLog = {
  plan_file: 'I-042',
  created_at: new Date().toISOString(),
  rounds: [
    {
      round: 0,
      model: 'claude-3-5-haiku',
      role: 'Structure Review',
      focus: 'YAML parsing, format, syntax',
      plan_before: '---\npbi:\n  title: "Test PBI"\nstories:\n  - title: "Story 1"\n---',
      plan_after:
        '---\npbi:\n  title: "Test PBI"\nstories:\n  - title: "Story 1"\n    priority: 2\n---',
      issues: [
        {
          category: 'structure',
          severity: 'warning',
          suggestion: 'Add priority field to story',
        },
      ],
      score: 75,
      plan_diff_lines: 1,
      converged: false,
      timestamp: new Date().toISOString(),
    },
    {
      round: 1,
      model: 'claude-3-5-sonnet',
      role: 'Logic & Patterns',
      focus: 'Logic gaps, missing patterns, architecture fit',
      plan_before: '---\npbi:\n  title: "Test PBI"\nstories:\n  - title: "Story 1"\n---',
      plan_after: '---\npbi:\n  title: "Test PBI"\nstories:\n  - title: "Story 1"\n---',
      issues: [
        {
          category: 'logic',
          severity: 'info',
          suggestion: 'Consider adding acceptance criteria',
        },
      ],
      score: 80,
      plan_diff_lines: 0,
      converged: false,
      timestamp: new Date().toISOString(),
    },
    {
      round: 2,
      model: 'claude-opus-4-7',
      role: 'Risk Assessment',
      focus: 'Risk assessment, edge cases, refactoring',
      plan_before: '---\npbi:\n  title: "Test PBI"\nstories:\n  - title: "Story 1"\n---',
      plan_after: '---\npbi:\n  title: "Test PBI"\nstories:\n  - title: "Story 1"\n---',
      issues: [],
      score: 85,
      plan_diff_lines: 0,
      converged: true,
      timestamp: new Date().toISOString(),
    },
  ],
  convergence: {
    stable_at_round: 2,
    final_diff_pct: 0.5,
    convergence_metric: 'plan_stability',
  },
  approval: {
    status: 'approved',
    timestamp: new Date().toISOString(),
  },
  summary: 'Plan reviewed across three rounds. Minor structure improvements suggested. Plan approved.',
}

describe('review-plan-job', () => {
  describe('ReviewLog Schema', () => {
    it('should have required top-level fields', () => {
      expect(sampleReviewLog).toHaveProperty('plan_file')
      expect(sampleReviewLog).toHaveProperty('created_at')
      expect(sampleReviewLog).toHaveProperty('rounds')
      expect(sampleReviewLog).toHaveProperty('convergence')
      expect(sampleReviewLog).toHaveProperty('approval')
      expect(sampleReviewLog).toHaveProperty('summary')
    })

    it('should have valid plan_file format', () => {
      expect(typeof sampleReviewLog.plan_file).toBe('string')
      expect(sampleReviewLog.plan_file.length).toBeGreaterThan(0)
    })

    it('should have valid ISO timestamps', () => {
      const isoRegex = /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}/
      expect(sampleReviewLog.created_at).toMatch(isoRegex)
      expect(sampleReviewLog.approval.timestamp).toMatch(isoRegex)
    })

    it('should have at least one round', () => {
      expect(sampleReviewLog.rounds.length).toBeGreaterThan(0)
    })

    it('should have valid round structure', () => {
      for (const round of sampleReviewLog.rounds) {
        expect(round).toHaveProperty('round')
        expect(round).toHaveProperty('model')
        expect(round).toHaveProperty('role')
        expect(round).toHaveProperty('focus')
        expect(round).toHaveProperty('plan_before')
        expect(round).toHaveProperty('plan_after')
        expect(round).toHaveProperty('issues')
        expect(round).toHaveProperty('score')
        expect(round).toHaveProperty('plan_diff_lines')
        expect(round).toHaveProperty('converged')
        expect(round).toHaveProperty('timestamp')

        expect(typeof round.round).toBe('number')
        expect(round.round).toBeGreaterThanOrEqual(0)
        expect(typeof round.score).toBe('number')
        expect(round.score).toBeGreaterThanOrEqual(0)
        expect(round.score).toBeLessThanOrEqual(100)
        expect(typeof round.plan_diff_lines).toBe('number')
        expect(round.plan_diff_lines).toBeGreaterThanOrEqual(0)
      }
    })

    it('should have valid issue structure per round', () => {
      for (const round of sampleReviewLog.rounds) {
        for (const issue of round.issues) {
          expect(issue).toHaveProperty('category')
          expect(issue).toHaveProperty('severity')
          expect(issue).toHaveProperty('suggestion')

          expect(['structure', 'logic', 'risk', 'pattern']).toContain(issue.category)
          expect(['error', 'warning', 'info']).toContain(issue.severity)
          expect(typeof issue.suggestion).toBe('string')
          expect(issue.suggestion.length).toBeGreaterThan(0)
        }
      }
    })

    it('should have valid convergence structure when present', () => {
      if (sampleReviewLog.convergence) {
        expect(sampleReviewLog.convergence).toHaveProperty('stable_at_round')
        expect(sampleReviewLog.convergence).toHaveProperty('final_diff_pct')
        expect(sampleReviewLog.convergence).toHaveProperty('convergence_metric')

        expect(typeof sampleReviewLog.convergence.stable_at_round).toBe('number')
        expect(sampleReviewLog.convergence.stable_at_round).toBeGreaterThanOrEqual(0)
        expect(typeof sampleReviewLog.convergence.final_diff_pct).toBe('number')
        expect(sampleReviewLog.convergence.final_diff_pct).toBeGreaterThanOrEqual(0)
        expect(sampleReviewLog.convergence.final_diff_pct).toBeLessThanOrEqual(100)
      }
    })

    it('should have valid approval status', () => {
      expect(['pending', 'approved', 'rejected']).toContain(sampleReviewLog.approval.status)
      if (sampleReviewLog.approval.status !== 'pending') {
        expect(sampleReviewLog.approval.timestamp).toBeDefined()
      }
    })

    it('should have non-empty summary', () => {
      expect(typeof sampleReviewLog.summary).toBe('string')
      expect(sampleReviewLog.summary.length).toBeGreaterThan(0)
    })
  })

  describe('Convergence Detection', () => {
    it('should detect convergence when diff_pct < 5% for two consecutive rounds', () => {
      // Simulate convergence: round 0 has 1 diff line, rounds 1-2 have 0 diffs
      const totalLines = 50
      const diff0 = 1
      const diff1 = 0
      const diff2 = 0

      const pct0 = (diff0 / totalLines) * 100 // 2%
      const pct1 = (diff1 / totalLines) * 100 // 0%
      const pct2 = (diff2 / totalLines) * 100 // 0%

      expect(pct0).toBeLessThan(5) // Should converge
      expect(pct1).toBeLessThan(5) // Should converge
      expect(pct2).toBeLessThan(5) // Should converge
    })

    it('should not detect convergence when diff_pct >= 5%', () => {
      const totalLines = 50
      const diff = 3 // 6% change

      const pct = (diff / totalLines) * 100
      expect(pct).toBeGreaterThanOrEqual(5)
    })
  })

  describe('Status Transitions', () => {
    it('should transition REVIEWING_PLAN → PLAN_REVIEWED when approved', () => {
      const log = { ...sampleReviewLog, approval: { status: 'approved', timestamp: new Date().toISOString() } }
      expect(log.approval.status).toBe('approved')
      // In actual implementation: update_idea_plan_reviewed({ approval_status: 'approved' })
      // → idea.status = 'PLAN_REVIEWED'
    })

    it('should transition REVIEWING_PLAN → PLAN_REVIEW_FAILED when rejected', () => {
      const log = { ...sampleReviewLog, approval: { status: 'rejected' } }
      expect(log.approval.status).toBe('rejected')
      // In actual implementation: update_idea_plan_reviewed({ approval_status: 'rejected' })
      // → idea.status = 'PLAN_REVIEW_FAILED'
    })
  })
})
