"""Tests for shared.blocks — Block Kit builders."""

from freezegun import freeze_time

from shared.blocks import (
    build_help_blocks,
    build_pay_summary_blocks,
    build_roster_blocks,
    build_shift_change_message,
    build_week_schedule,
)


def _all_action_ids(blocks):
    ids = []
    for b in blocks:
        if b.get("type") == "actions":
            ids.extend(e["action_id"] for e in b["elements"])
    return ids


class TestBuildWeekSchedule:
    @freeze_time("2026-06-01 12:00:00")  # Monday
    def test_header_and_section_present(self, schedule):
        blocks = build_week_schedule(schedule)
        assert blocks[0]["type"] == "header"
        assert "After-Hours Schedule" in blocks[0]["text"]["text"]
        assert blocks[1]["type"] == "section"

    @freeze_time("2026-06-01 12:00:00")
    def test_all_available_produces_pickup_buttons(self, schedule):
        # Empty schedule → every shift is available → pickup buttons exist,
        # including a weekend day button with the _day suffix.
        blocks = build_week_schedule(schedule)
        action_ids = _all_action_ids(blocks)
        assert "pickup_2026-06-03" in action_ids  # Wednesday night
        assert "pickup_2026-06-06_day" in action_ids  # Saturday day shift
        assert "pickup_2026-06-06" in action_ids  # Saturday night shift

    @freeze_time("2026-06-01 12:00:00")
    def test_assigned_shift_has_no_pickup_button(self, schedule, seed):
        seed.weekly("Wednesday", "114", "Alice")
        blocks = build_week_schedule(schedule)
        assert "pickup_2026-06-03" not in _all_action_ids(blocks)
        assert "Alice (Ext 114)" in blocks[1]["text"]["text"]


class TestBuildShiftChangeMessage:
    def test_picked_up_weekday(self):
        blocks = build_shift_change_message(
            "U1", "2026-06-03", "picked_up", "114", "Alice"
        )
        text = blocks[0]["text"]["text"]
        assert "<@U1>" in text and "picked up" in text and "Ext 114" in text
        # Weekday → no (Day/Night) label
        assert "(Night" not in text

    def test_dropped_shows_available(self):
        blocks = build_shift_change_message(
            "U1", "2026-06-03", "dropped", "114", "Alice"
        )
        assert "Available" in blocks[0]["text"]["text"]

    def test_swapped_text(self):
        blocks = build_shift_change_message("U2", "2026-06-03", "swapped", "115", "Bob")
        assert "swapped" in blocks[0]["text"]["text"]

    def test_weekend_includes_shift_label(self):
        blocks = build_shift_change_message(
            "U1", "2026-06-06", "picked_up", "200", "Alice", shift_type="day"
        )
        assert "Day (8am" in blocks[0]["text"]["text"]


class TestBuildPaySummaryBlocks:
    def test_renders_breakdown_and_totals(self):
        breakdown = [
            {
                "day": "Mon",
                "date_label": "Jun 1",
                "name": "Alice",
                "extension": "114",
                "rate": 50.0,
            }
        ]
        totals = {
            "Alice": {"shifts": 1, "total": 50.0, "extension": "114", "rate": 50.0}
        }
        blocks = build_pay_summary_blocks("Jun 1 to Jun 7", breakdown, totals)
        assert blocks[0]["type"] == "header"
        assert "Jun 1 to Jun 7" in blocks[0]["text"]["text"]
        text = blocks[1]["text"]["text"]
        assert "Alice" in text and "$50.00" in text and "1 shift" in text


class TestBuildHelpBlocks:
    def test_non_admin_excludes_admin_section(self):
        text = build_help_blocks(is_admin=False)[0]["text"]["text"]
        assert "Admin Commands" not in text

    def test_admin_includes_admin_section(self):
        text = build_help_blocks(is_admin=True)[0]["text"]["text"]
        assert "Admin Commands" in text


class TestBuildRosterBlocks:
    def test_empty_roster(self):
        text = build_roster_blocks([])[0]["text"]["text"]
        assert "No employees" in text

    def test_linked_and_unlinked(self):
        roster = [
            {"SK": "115", "name": "Bob", "slack_user_id": ""},
            {"SK": "114", "name": "Alice", "slack_user_id": "U_ALICE"},
        ]
        text = build_roster_blocks(roster)[0]["text"]["text"]
        # Sorted by extension → Alice (114) appears before Bob (115)
        assert text.index("Alice") < text.index("Bob")
        assert "<@U_ALICE>" in text
        assert "_not linked_" in text