-- Phase 11b: 歷史數據回填 alert_operation_log
-- 建立時間: 2026-04-08 (台北時區)
-- 建立者: Claude Code — 統帥指令「把之前所有的告警訊息，通通寫入資料庫」
--
-- 資料來源:
--   incidents (14筆) → ALERT_RECEIVED 事件
--   approval_records (265筆) → TELEGRAM_SENT + USER_ACTION 事件
--   audit_logs (110筆) → EXECUTION_STARTED + EXECUTION_COMPLETED 事件
--
-- 注意: 使用 ON CONFLICT DO NOTHING 避免重複執行

-- ============================================================
-- Step 1: incidents → ALERT_RECEIVED
-- ============================================================
INSERT INTO alert_operation_log (
    id, incident_id, event_type, actor, action_detail, success, context, created_at
)
SELECT
    gen_random_uuid()::text,
    incident_id,
    'ALERT_RECEIVED',
    COALESCE(source, 'alertmanager'),
    COALESCE(
        signals->0->>'alert_name',
        'unknown'
    ),
    TRUE,
    jsonb_build_object(
        'severity',          severity::text,
        'status',            status::text,
        'alert_name',        COALESCE(signals->0->>'alert_name', 'unknown'),
        'namespace',         COALESCE(signals->0->'labels'->>'namespace', 'default'),
        'resource',          COALESCE(signals->0->'labels'->>'resource', ''),
        'message',           COALESCE(signals->0->'annotations'->>'message', ''),
        'source',            COALESCE(source, 'alertmanager'),
        'signal_count',      json_array_length(signals),
        'backfill',          TRUE,
        'backfill_at',       NOW()::text
    ),
    created_at
FROM incidents
ON CONFLICT DO NOTHING;

-- ============================================================
-- Step 2: approval_records → TELEGRAM_SENT (每筆 approval 代表推送了一次卡片)
-- ============================================================
INSERT INTO alert_operation_log (
    id, incident_id, approval_id, event_type, actor, action_detail, success, context, created_at
)
SELECT
    gen_random_uuid()::text,
    incident_id,
    id,
    'TELEGRAM_SENT',
    'system',
    'approval_card_sent',
    TRUE,
    jsonb_build_object(
        'action',          action,
        'risk_level',      risk_level::text,
        'requested_by',    requested_by,
        'hit_count',       hit_count,
        'backfill',        TRUE,
        'backfill_at',     NOW()::text
    ),
    created_at
FROM approval_records
ON CONFLICT DO NOTHING;

-- ============================================================
-- Step 3: approval_records (APPROVED/REJECTED) → USER_ACTION
-- ============================================================
INSERT INTO alert_operation_log (
    id, incident_id, approval_id, event_type, actor, action_detail, success, context, created_at
)
SELECT
    gen_random_uuid()::text,
    incident_id,
    id,
    'USER_ACTION',
    COALESCE(requested_by, 'unknown'),
    CASE status::text
        WHEN 'APPROVED'          THEN 'approve'
        WHEN 'REJECTED'          THEN 'reject'
        WHEN 'EXECUTION_SUCCESS' THEN 'approve'
        WHEN 'EXECUTION_FAILED'  THEN 'approve'
        ELSE status::text
    END,
    CASE status::text
        WHEN 'APPROVED'          THEN TRUE
        WHEN 'EXECUTION_SUCCESS' THEN TRUE
        WHEN 'REJECTED'          THEN FALSE
        WHEN 'EXECUTION_FAILED'  THEN TRUE  -- 批准了但執行失敗
        ELSE NULL
    END,
    jsonb_build_object(
        'status',            status::text,
        'risk_level',        risk_level::text,
        'rejection_reason',  COALESCE(rejection_reason, ''),
        'signatures',        signatures,
        'resolved_at',       COALESCE(resolved_at::text, ''),
        'backfill',          TRUE,
        'backfill_at',       NOW()::text
    ),
    COALESCE(resolved_at, updated_at, created_at)
FROM approval_records
WHERE status::text IN ('APPROVED', 'REJECTED', 'EXECUTION_SUCCESS', 'EXECUTION_FAILED')
ON CONFLICT DO NOTHING;

-- ============================================================
-- Step 4: audit_logs → EXECUTION_COMPLETED
-- ============================================================
INSERT INTO alert_operation_log (
    id, approval_id, audit_log_id, event_type, actor, action_detail, success, error_message, context, created_at
)
SELECT
    gen_random_uuid()::text,
    approval_id,
    id,
    'EXECUTION_COMPLETED',
    COALESCE(executed_by, 'system'),
    COALESCE(operation_type, 'unknown') || '/' || COALESCE(target_resource, ''),
    success,
    error_message,
    jsonb_build_object(
        'operation_type',        operation_type,
        'target_resource',       target_resource,
        'namespace',             namespace,
        'execution_duration_ms', execution_duration_ms,
        'dry_run_passed',        dry_run_passed,
        'authorization_channel', COALESCE(authorization_channel, ''),
        'retry_count',           retry_count,
        'failure_classification', COALESCE(failure_classification, ''),
        'auto_repair_attempted', auto_repair_attempted,
        'backfill',              TRUE,
        'backfill_at',           NOW()::text
    ),
    created_at
FROM audit_logs
ON CONFLICT DO NOTHING;

-- ============================================================
-- 驗證結果
-- ============================================================
SELECT
    event_type::text,
    COUNT(*) as count,
    MIN(created_at) as oldest,
    MAX(created_at) as newest
FROM alert_operation_log
GROUP BY event_type
ORDER BY event_type;