added team overview

internal/db/team.go

@@ -2,6 +2,7 @@ package db
 
 import (
 	"context"
+	"sort"
 
 	"github.com/pkg/errors"
 	"github.com/uptrace/bun"
@@ -72,3 +73,149 @@ func (t *Team) InSeason(seasonID int) bool {
 	}
 	return false
 }
+
+// TeamSeasonInfo holds information about a team's participation in a specific season+league.
+type TeamSeasonInfo struct {
+	Season     *Season
+	League     *League
+	Record     *TeamRecord
+	TotalTeams int
+	Position   int
+}
+
+// GetTeamSeasonParticipation returns all season+league combos the team participated in,
+// with computed records, positions, and total team counts.
+func GetTeamSeasonParticipation(
+	ctx context.Context,
+	tx bun.Tx,
+	teamID int,
+) ([]*TeamSeasonInfo, error) {
+	if teamID == 0 {
+		return nil, errors.New("teamID not provided")
+	}
+
+	// Get all participations for this team
+	var participations []*TeamParticipation
+	err := tx.NewSelect().
+		Model(&participations).
+		Where("team_id = ?", teamID).
+		Relation("Season", func(q *bun.SelectQuery) *bun.SelectQuery {
+			return q.Relation("Leagues")
+		}).
+		Relation("League").
+		Scan(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "tx.NewSelect participations")
+	}
+
+	var results []*TeamSeasonInfo
+
+	for _, p := range participations {
+		// Get all teams in this season+league for position calculation
+		var teams []*Team
+		err := tx.NewSelect().
+			Model(&teams).
+			Join("INNER JOIN team_participations AS tp ON tp.team_id = t.id").
+			Where("tp.season_id = ? AND tp.league_id = ?", p.SeasonID, p.LeagueID).
+			Scan(ctx)
+		if err != nil {
+			return nil, errors.Wrap(err, "tx.NewSelect teams")
+		}
+
+		// Get all fixtures for this season+league
+		fixtures, err := GetAllocatedFixtures(ctx, tx, p.SeasonID, p.LeagueID)
+		if err != nil {
+			return nil, errors.Wrap(err, "GetAllocatedFixtures")
+		}
+
+		fixtureIDs := make([]int, len(fixtures))
+		for i, f := range fixtures {
+			fixtureIDs[i] = f.ID
+		}
+
+		resultMap, err := GetFinalizedResultsForFixtures(ctx, tx, fixtureIDs)
+		if err != nil {
+			return nil, errors.Wrap(err, "GetFinalizedResultsForFixtures")
+		}
+
+		// Compute leaderboard to get position
+		leaderboard := ComputeLeaderboard(teams, fixtures, resultMap)
+
+		var position int
+		var record *TeamRecord
+		for _, entry := range leaderboard {
+			if entry.Team.ID == teamID {
+				position = entry.Position
+				record = entry.Record
+				break
+			}
+		}
+		if record == nil {
+			record = &TeamRecord{}
+		}
+
+		results = append(results, &TeamSeasonInfo{
+			Season:     p.Season,
+			League:     p.League,
+			Record:     record,
+			TotalTeams: len(teams),
+			Position:   position,
+		})
+	}
+
+	// Sort by season start date descending (newest first)
+	sort.Slice(results, func(i, j int) bool {
+		return results[i].Season.StartDate.After(results[j].Season.StartDate)
+	})
+
+	return results, nil
+}
+
+// TeamAllTimePlayerStats holds aggregated all-time stats for a player on a team.
+type TeamAllTimePlayerStats struct {
+	PlayerID      int    `bun:"player_id"`
+	PlayerName    string `bun:"player_name"`
+	SeasonsPlayed int    `bun:"seasons_played"`
+	PeriodsPlayed int    `bun:"total_periods_played"`
+	Goals         int    `bun:"total_goals"`
+	Assists       int    `bun:"total_assists"`
+	Saves         int    `bun:"total_saves"`
+}
+
+// GetTeamAllTimePlayerStats returns aggregated all-time stats for all players
+// who have ever played for a given team across all seasons.
+func GetTeamAllTimePlayerStats(
+	ctx context.Context,
+	tx bun.Tx,
+	teamID int,
+) ([]*TeamAllTimePlayerStats, error) {
+	if teamID == 0 {
+		return nil, errors.New("teamID not provided")
+	}
+
+	var stats []*TeamAllTimePlayerStats
+	err := tx.NewRaw(`
+		SELECT
+			frps.player_id AS player_id,
+			COALESCE(p.name, frps.player_username) AS player_name,
+			COUNT(DISTINCT s.id) AS seasons_played,
+			COALESCE(SUM(frps.periods_played), 0) AS total_periods_played,
+			COALESCE(SUM(frps.goals), 0) AS total_goals,
+			COALESCE(SUM(frps.assists), 0) AS total_assists,
+			COALESCE(SUM(frps.saves), 0) AS total_saves
+		FROM fixture_result_player_stats frps
+		JOIN fixture_results fr ON fr.id = frps.fixture_result_id
+		JOIN fixtures f ON f.id = fr.fixture_id
+		JOIN seasons s ON s.id = f.season_id
+		LEFT JOIN players p ON p.id = frps.player_id
+		WHERE fr.finalized = true
+		  AND frps.team_id = ?
+		  AND frps.period_num = 3
+		  AND frps.player_id IS NOT NULL
+		GROUP BY frps.player_id, COALESCE(p.name, frps.player_username)
+	`, teamID).Scan(ctx, &stats)
+	if err != nil {
+		return nil, errors.Wrap(err, "tx.NewRaw")
+	}
+	return stats, nil
+}