-- name: UpsertTaskUsage :exec
-- Bumps `updated_at` on INSERT and on conflict so the hourly-rollup worker
-- detects the row as dirty and re-aggregates its bucket.
-- Without the conflict-side bump, a correction to historical token counts
-- would never propagate to the rollup.
-- cost_usd_ticks is the provider's own price for this usage (1e-10 USD), NULL
-- when it reports none. It is overwritten like the token counters so a
-- corrected report replaces the previous figure rather than accumulating.
INSERT INTO task_usage (task_id, provider, model, input_tokens, output_tokens, cache_read_tokens, cache_write_tokens, cost_usd_ticks, updated_at)
VALUES ($1, $2, $3, $4, $5, $6, $7, sqlc.narg('cost_usd_ticks'), now())
ON CONFLICT (task_id, provider, model)
DO UPDATE SET
    input_tokens = EXCLUDED.input_tokens,
    output_tokens = EXCLUDED.output_tokens,
    cache_read_tokens = EXCLUDED.cache_read_tokens,
    cache_write_tokens = EXCLUDED.cache_write_tokens,
    cost_usd_ticks = EXCLUDED.cost_usd_ticks,
    updated_at = now();

-- name: GetTaskUsage :many
SELECT * FROM task_usage
WHERE task_id = $1
ORDER BY model;

-- name: GetIssueUsageSummary :one
SELECT
    COALESCE(SUM(tu.input_tokens), 0)::bigint AS total_input_tokens,
    COALESCE(SUM(tu.output_tokens), 0)::bigint AS total_output_tokens,
    COALESCE(SUM(tu.cache_read_tokens), 0)::bigint AS total_cache_read_tokens,
    COALESCE(SUM(tu.cache_write_tokens), 0)::bigint AS total_cache_write_tokens,
    COALESCE(SUM(tu.cost_usd_ticks), 0)::bigint AS total_cost_usd_ticks,
    COALESCE(SUM(tu.input_tokens)       FILTER (WHERE tu.cost_usd_ticks IS NULL), 0)::bigint AS uncosted_input_tokens,
    COALESCE(SUM(tu.output_tokens)      FILTER (WHERE tu.cost_usd_ticks IS NULL), 0)::bigint AS uncosted_output_tokens,
    COALESCE(SUM(tu.cache_read_tokens)  FILTER (WHERE tu.cost_usd_ticks IS NULL), 0)::bigint AS uncosted_cache_read_tokens,
    COALESCE(SUM(tu.cache_write_tokens) FILTER (WHERE tu.cost_usd_ticks IS NULL), 0)::bigint AS uncosted_cache_write_tokens,
    COUNT(DISTINCT tu.task_id)::int AS task_count
FROM task_usage tu
JOIN agent_task_queue atq ON atq.id = tu.task_id
WHERE atq.issue_id = $1;

-- name: ListDashboardUsageDaily :many
-- Daily per-(date, provider, model) token aggregates for the workspace, served
-- from the UTC-bucketed `task_usage_hourly` table and
-- sliced to calendar days under the caller-supplied @tz. Optionally
-- scoped to a single project via sqlc.narg('project_id'). Powers the
-- workspace dashboard's daily cost chart.
-- The viewer's tz is applied here at query time, so a viewer in
-- Asia/Shanghai gets their "today" cut at +08 and one in
-- America/Los_Angeles gets theirs at -08 against the same UTC rows.
--
-- @since is already the viewer's local start-of-day-(N) as a UTC
-- instant (computed by parseSinceParamInTZ). It must NOT be re-truncated
-- with DATE_TRUNC here — DATE_TRUNC operates in the session tz and would
-- snap the cutoff back to UTC midnight, dragging in an extra partial
-- local day for any non-UTC viewer.
-- provider is LOWER()-normalized so mixed-case historical rows (written
-- before the handler lowercased provider on write) merge with new rows
-- instead of forming a separate case-variant bucket.
SELECT
    DATE(bucket_hour AT TIME ZONE sqlc.arg('tz')::text) AS date,
    LOWER(provider) AS provider,
    model,
    SUM(input_tokens)::bigint        AS input_tokens,
    SUM(output_tokens)::bigint       AS output_tokens,
    SUM(cache_read_tokens)::bigint   AS cache_read_tokens,
    SUM(cache_write_tokens)::bigint  AS cache_write_tokens,
    SUM(cost_usd_ticks)::bigint                                          AS cost_usd_ticks,
    SUM(COALESCE(uncosted_input_tokens, input_tokens))::bigint           AS uncosted_input_tokens,
    SUM(COALESCE(uncosted_output_tokens, output_tokens))::bigint         AS uncosted_output_tokens,
    SUM(COALESCE(uncosted_cache_read_tokens, cache_read_tokens))::bigint AS uncosted_cache_read_tokens,
    SUM(COALESCE(uncosted_cache_write_tokens, cache_write_tokens))::bigint AS uncosted_cache_write_tokens,
    SUM(task_count)::int             AS task_count
FROM task_usage_hourly
WHERE workspace_id = $1
  AND bucket_hour >= sqlc.arg('since')::timestamptz
  AND (sqlc.narg('project_id')::uuid IS NULL OR project_id = sqlc.narg('project_id'))
GROUP BY DATE(bucket_hour AT TIME ZONE sqlc.arg('tz')::text), LOWER(provider), model
ORDER BY DATE(bucket_hour AT TIME ZONE sqlc.arg('tz')::text) DESC, LOWER(provider), model;

-- name: ListDashboardUsageByAgent :many
-- Per-(agent, provider, model) token aggregates from `task_usage_hourly`. No
-- date grouping in the result, so this query takes no `@tz` — the
-- @since cutoff is a raw timestamptz the Go layer has already computed
-- in the viewer's tz. Model dimension is preserved so the client can
-- compute cost from its per-model pricing table; the client folds rows
-- by agent for the "by agent" list on the dashboard.
--
-- task_count is summed across hourly buckets — one task that spans
-- multiple hours lands in multiple buckets, so this over-counts by
-- hour the same way the daily version over-counted by day. The
-- frontend prefers `ListDashboardAgentRunTime` for the user-facing
-- "tasks" column, so this stays informational only.
-- provider is LOWER()-normalized so mixed-case historical rows merge with
-- new rows (see ListDashboardUsageDaily).
SELECT
    agent_id,
    LOWER(provider) AS provider,
    model,
    SUM(input_tokens)::bigint        AS input_tokens,
    SUM(output_tokens)::bigint       AS output_tokens,
    SUM(cache_read_tokens)::bigint   AS cache_read_tokens,
    SUM(cache_write_tokens)::bigint  AS cache_write_tokens,
    SUM(cost_usd_ticks)::bigint                                          AS cost_usd_ticks,
    SUM(COALESCE(uncosted_input_tokens, input_tokens))::bigint           AS uncosted_input_tokens,
    SUM(COALESCE(uncosted_output_tokens, output_tokens))::bigint         AS uncosted_output_tokens,
    SUM(COALESCE(uncosted_cache_read_tokens, cache_read_tokens))::bigint AS uncosted_cache_read_tokens,
    SUM(COALESCE(uncosted_cache_write_tokens, cache_write_tokens))::bigint AS uncosted_cache_write_tokens,
    SUM(task_count)::int             AS task_count
FROM task_usage_hourly
WHERE workspace_id = $1
  AND bucket_hour >= @since::timestamptz
  AND (sqlc.narg('project_id')::uuid IS NULL OR project_id = sqlc.narg('project_id'))
GROUP BY agent_id, LOWER(provider), model
ORDER BY agent_id, LOWER(provider), model;

-- name: ListDashboardRunTimeDaily :many
-- Daily per-date run time + task counts for the workspace, optionally
-- scoped to a single project. Powers the workspace dashboard's "Time"
-- and "Tasks" metrics on the same toggle as Tokens / Cost. Bucketed by
-- completed_at (terminal time) sliced into calendar days under the
-- caller-supplied @tz — same Viewing-tz treatment as ListDashboardUsageDaily
-- so the Time / Tasks tabs cut their day boundary identically to the
-- Cost / Tokens tabs (a viewer east of UTC would otherwise see the four
-- tabs disagree on a "1d" window). Only terminal tasks (completed or
-- failed) with both started_at and completed_at populated contribute.
--
-- @since is already the viewer's local start-of-day-(N) (parseSinceParamInTZ)
-- — passed straight through, NOT re-truncated; see ListDashboardUsageDaily.
SELECT
    DATE(atq.completed_at AT TIME ZONE sqlc.arg('tz')::text) AS date,
    COALESCE(
        SUM(EXTRACT(EPOCH FROM (atq.completed_at - atq.started_at)))::bigint,
        0
    )::bigint AS total_seconds,
    COUNT(*)::int AS task_count,
    COUNT(*) FILTER (WHERE atq.status = 'failed')::int AS failed_count
FROM agent_task_queue atq
JOIN agent a ON a.id = atq.agent_id
LEFT JOIN issue i ON i.id = atq.issue_id
WHERE a.workspace_id = $1
  AND atq.status IN ('completed', 'failed')
  AND atq.started_at IS NOT NULL
  AND atq.completed_at IS NOT NULL
  AND atq.completed_at >= sqlc.arg('since')::timestamptz
  AND (sqlc.narg('project_id')::uuid IS NULL OR i.project_id = sqlc.narg('project_id'))
GROUP BY DATE(atq.completed_at AT TIME ZONE sqlc.arg('tz')::text)
ORDER BY DATE(atq.completed_at AT TIME ZONE sqlc.arg('tz')::text) DESC;

-- name: ListDashboardAgentRunTime :many
-- Per-agent total task run time and task count for the workspace, optionally
-- scoped to a single project. Counts only terminal runs (completed or failed)
-- with both started_at and completed_at populated — queued/running tasks have
-- no finite duration. Anchored on completed_at so the window matches the
-- token cost window (which is anchored on tu.created_at, ~= completion time).
--
-- No date bucketing, so no @tz — but @since is the viewer's local
-- start-of-day-(N) so the "last N days" window lines up with the per-agent
-- cost card; passed straight through without re-truncation.
SELECT
    atq.agent_id,
    COALESCE(
        SUM(EXTRACT(EPOCH FROM (atq.completed_at - atq.started_at)))::bigint,
        0
    )::bigint AS total_seconds,
    COUNT(*)::int AS task_count,
    COUNT(*) FILTER (WHERE atq.status = 'failed')::int AS failed_count
FROM agent_task_queue atq
JOIN agent a ON a.id = atq.agent_id
LEFT JOIN issue i ON i.id = atq.issue_id
WHERE a.workspace_id = $1
  AND atq.status IN ('completed', 'failed')
  AND atq.started_at IS NOT NULL
  AND atq.completed_at IS NOT NULL
  AND atq.completed_at >= @since::timestamptz
  AND (sqlc.narg('project_id')::uuid IS NULL OR i.project_id = sqlc.narg('project_id'))
GROUP BY atq.agent_id
ORDER BY total_seconds DESC;

-- name: ListDashboardFailuresDaily :many
-- Daily per-(date, failure_reason) terminal-task counts for the workspace,
-- optionally scoped to a single project. Powers the workspace dashboard's
-- "Errors" trend and the errors-by-class breakdown.
--
-- Shape note: this returns EVERY terminal task, not just the failures. The
-- `failure_reason = ''` row of each date carries that date's succeeded
-- count, which is the denominator the client needs for an error rate. A
-- failed row whose failure_reason column is NULL or empty (pre-MUL-1949
-- rows, or a failure path that forgot to classify) collapses into the
-- 'unclassified' bucket so it stays countable instead of masquerading as a
-- success. Cardinality is bounded by days x (21 reasons + 2), so the whole
-- window fits in one small payload.
--
-- Unlike ListDashboardRunTimeDaily this does NOT require started_at — a task
-- that expired in the queue (failure_reason='queued_expired') never started
-- but is unambiguously a failure, and dropping it would under-report exactly
-- the outage the Errors chart exists to surface. Every failure path sets
-- completed_at, so bucketing on it covers all of them.
--
-- @since is already the viewer's local start-of-day-(N) (parseSinceParamInTZ)
-- — passed straight through, NOT re-truncated; see ListDashboardUsageDaily.
SELECT
    DATE(atq.completed_at AT TIME ZONE sqlc.arg('tz')::text) AS date,
    CASE
        WHEN atq.status = 'failed'
            THEN COALESCE(NULLIF(atq.failure_reason, ''), 'unclassified')
        ELSE ''
    END AS failure_reason,
    COUNT(*)::int AS task_count
FROM agent_task_queue atq
JOIN agent a ON a.id = atq.agent_id
LEFT JOIN issue i ON i.id = atq.issue_id
WHERE a.workspace_id = $1
  AND atq.status IN ('completed', 'failed')
  AND atq.completed_at IS NOT NULL
  AND atq.completed_at >= sqlc.arg('since')::timestamptz
  AND (sqlc.narg('project_id')::uuid IS NULL OR i.project_id = sqlc.narg('project_id'))
GROUP BY 1, 2
ORDER BY 1 DESC, 2;

-- name: ListDashboardFailuresByAgent :many
-- Per-(agent, failure_reason) terminal-task counts — the "top offenders"
-- half of the dashboard's errors breakdown. Same `failure_reason = ''`
-- succeeded-bucket convention as ListDashboardFailuresDaily, so the client
-- can rank agents by failure rate rather than raw count.
--
-- No date bucketing, so no @tz — @since is the viewer's local
-- start-of-day-(N) so the window lines up with the per-agent run-time card.
SELECT
    atq.agent_id,
    CASE
        WHEN atq.status = 'failed'
            THEN COALESCE(NULLIF(atq.failure_reason, ''), 'unclassified')
        ELSE ''
    END AS failure_reason,
    COUNT(*)::int AS task_count
FROM agent_task_queue atq
JOIN agent a ON a.id = atq.agent_id
LEFT JOIN issue i ON i.id = atq.issue_id
WHERE a.workspace_id = $1
  AND atq.status IN ('completed', 'failed')
  AND atq.completed_at IS NOT NULL
  AND atq.completed_at >= @since::timestamptz
  AND (sqlc.narg('project_id')::uuid IS NULL OR i.project_id = sqlc.narg('project_id'))
GROUP BY atq.agent_id, 2
ORDER BY atq.agent_id, 2;
