-- 画像管理テーブル作成
-- サーバーAPI変更要求書対応 - 最優先項目

CREATE TABLE IF NOT EXISTS rog_uploaded_images (
    id SERIAL PRIMARY KEY,
    
    -- 基本情報
    original_filename VARCHAR(255) NOT NULL,
    server_filename VARCHAR(255) NOT NULL UNIQUE,
    file_url TEXT NOT NULL,
    file_size BIGINT NOT NULL,
    mime_type VARCHAR(50) NOT NULL,
    
    -- 関連情報
    event_code VARCHAR(50),
    team_name VARCHAR(255),
    cp_number INTEGER,
    
    -- アップロード情報
    upload_source VARCHAR(50) DEFAULT 'direct',  -- 'direct', 'sharing_intent', 'bulk_upload'
    device_platform VARCHAR(20),  -- 'ios', 'android'
    
    -- メタデータ
    capture_timestamp TIMESTAMP WITH TIME ZONE,
    upload_timestamp TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    device_info TEXT,
    
    -- 処理状況
    processing_status VARCHAR(20) DEFAULT 'uploaded',  -- 'uploaded', 'processing', 'processed', 'failed'
    thumbnail_url TEXT,
    
    -- 外部キー
    gpslog_id INTEGER REFERENCES rog_gpslog(id) ON DELETE SET NULL,
    entry_id INTEGER REFERENCES rog_entry(id) ON DELETE SET NULL,
    
    -- システム情報
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- インデックス作成
CREATE INDEX idx_uploaded_images_event_team ON rog_uploaded_images(event_code, team_name);
CREATE INDEX idx_uploaded_images_cp_number ON rog_uploaded_images(cp_number);
CREATE INDEX idx_uploaded_images_upload_timestamp ON rog_uploaded_images(upload_timestamp);
CREATE INDEX idx_uploaded_images_processing_status ON rog_uploaded_images(processing_status);
CREATE INDEX idx_uploaded_images_gpslog ON rog_uploaded_images(gpslog_id);

-- コメント追加
COMMENT ON TABLE rog_uploaded_images IS '画像アップロード管理テーブル - マルチアップロード対応';
COMMENT ON COLUMN rog_uploaded_images.original_filename IS '元のファイル名';
COMMENT ON COLUMN rog_uploaded_images.server_filename IS 'サーバー上のファイル名';
COMMENT ON COLUMN rog_uploaded_images.file_url IS '画像URL';
COMMENT ON COLUMN rog_uploaded_images.file_size IS 'ファイルサイズ（バイト）';
COMMENT ON COLUMN rog_uploaded_images.upload_source IS 'アップロード方法';
COMMENT ON COLUMN rog_uploaded_images.device_platform IS 'デバイスプラットフォーム';
COMMENT ON COLUMN rog_uploaded_images.processing_status IS '処理状況';

-- 制約追加
ALTER TABLE rog_uploaded_images ADD CONSTRAINT chk_file_size 
    CHECK (file_size > 0 AND file_size <= 10485760);  -- 最大10MB

ALTER TABLE rog_uploaded_images ADD CONSTRAINT chk_mime_type 
    CHECK (mime_type IN ('image/jpeg', 'image/png', 'image/heic', 'image/webp'));

ALTER TABLE rog_uploaded_images ADD CONSTRAINT chk_upload_source 
    CHECK (upload_source IN ('direct', 'sharing_intent', 'bulk_upload'));

ALTER TABLE rog_uploaded_images ADD CONSTRAINT chk_device_platform 
    CHECK (device_platform IN ('ios', 'android', 'web'));

ALTER TABLE rog_uploaded_images ADD CONSTRAINT chk_processing_status 
    CHECK (processing_status IN ('uploaded', 'processing', 'processed', 'failed'));

-- トリガー関数：updated_at自動更新
CREATE OR REPLACE FUNCTION update_uploaded_images_updated_at()
RETURNS TRIGGER AS $$
BEGIN
    NEW.updated_at = NOW();
    RETURN NEW;
END;
$$ LANGUAGE plpgsql;

-- トリガー作成
CREATE TRIGGER trigger_update_uploaded_images_updated_at
    BEFORE UPDATE ON rog_uploaded_images
    FOR EACH ROW
    EXECUTE FUNCTION update_uploaded_images_updated_at();