206 lines
10 KiB
Go
206 lines
10 KiB
Go
package bouquins
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import (
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"database/sql"
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"errors"
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"fmt"
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"log"
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)
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const (
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STMT_BOOKS0 = `SELECT books.id AS id,title,series_index,name as series_name,series.id AS series_id
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FROM books LEFT OUTER JOIN books_series_link ON books.id = books_series_link.book
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LEFT OUTER JOIN series ON series.id = books_series_link.series `
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STMT_BOOKS_TAGS0 = `SELECT name, books_tags_link.book as book FROM tags, books_tags_link
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WHERE tags.id = books_tags_link.tag AND books_tags_link.book IN ( SELECT id FROM books `
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STMT_BOOKS_AUTHORS0 = `SELECT authors.id, authors.name, books_authors_link.book as book
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FROM authors, books_authors_link WHERE books_authors_link.author = authors.id
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AND books_authors_link.book IN ( SELECT id FROM books `
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STMT_SEARCH_TERM_BOOKS = " books.sort like ? "
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STMT_SERIES0 = `SELECT series.id, series.name, count(book) FROM series
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LEFT OUTER JOIN books_series_link ON books_series_link.series = series.id
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GROUP BY series.id `
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STMT_SERIES_AUTHORS0 = `SELECT DISTINCT authors.id, authors.name, books_series_link.series
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FROM authors, books_authors_link, books_series_link
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WHERE books_authors_link.book = books_series_link.book AND books_authors_link.author = authors.id
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AND books_series_link.series IN ( SELECT id FROM series `
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STMT_SERIES_SEARCH = "SELECT series.id, series.name FROM series WHERE "
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STMT_SEARCH_TERM_SERIES = " series.sort like ? "
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STMT_AUTHORS0 = `SELECT authors.id, authors.name, count(book) as count FROM authors, books_authors_link
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WHERE authors.id = books_authors_link.author GROUP BY author `
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STMT_AUTHORS_SEARCH = "SELECT id, name FROM authors WHERE "
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STMT_SEARCH_TERM_AUTHOR = " sort like ? "
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STMT_PAGE = " LIMIT ? OFFSET ?"
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STMT_WHERE = " WHERE "
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STMT_BOOL_AND = " AND "
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STMT_BOOL_OR = " OR "
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STMT_SEARCH_ORDER = " ORDER BY books.sort"
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STMT_BOOKS_COUNT = "SELECT count(id) FROM books"
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STMT_BOOK = `SELECT books.id AS id,title, series_index, series.name AS series_name, series.id AS series_id,
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strftime('%s', timestamp), strftime('%Y', pubdate), isbn,lccn,path,uuid,has_cover,
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languages.lang_code, publishers.name AS pubname FROM books
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LEFT OUTER JOIN books_languages_link ON books_languages_link.book = books.id
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LEFT OUTER JOIN languages ON languages.id = books_languages_link.lang_code
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LEFT OUTER JOIN data ON data.book = books.id
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LEFT OUTER JOIN books_series_link ON books.id = books_series_link.book
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LEFT OUTER JOIN series ON series.id = books_series_link.series
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LEFT OUTER JOIN books_publishers_link ON books.id = books_publishers_link.book
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LEFT OUTER JOIN publishers ON publishers.id = books_publishers_link.publisher
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WHERE books.id = ?`
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STMT_BOOK_TAGS = "SELECT name FROM tags, books_tags_link WHERE tags.id = books_tags_link.tag AND books_tags_link.book = ?"
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STMT_BOOK_AUTHORS = `SELECT authors.id, authors.name, books_authors_link.book as book
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FROM authors, books_authors_link WHERE books_authors_link.author = authors.id
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AND books_authors_link.book = ?`
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STMT_BOOK_DATA = "SELECT data.name, data.format, data.uncompressed_size FROM data WHERE data.book = ?"
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STMT_BOOKS_ID_ASC = STMT_BOOKS0 + " ORDER BY id" + STMT_PAGE
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STMT_BOOKS_ID_DESC = STMT_BOOKS0 + "ORDER BY id DESC" + STMT_PAGE
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STMT_BOOKS_TITLE_ASC = STMT_BOOKS0 + "ORDER BY books.sort" + STMT_PAGE
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STMT_BOOKS_TITLE_DESC = STMT_BOOKS0 + "ORDER BY books.sort DESC" + STMT_PAGE
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STMT_BOOKS_TAGS_ID_ASC = STMT_BOOKS_TAGS0 + "ORDER BY id" + STMT_PAGE + ")"
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STMT_BOOKS_TAGS_ID_DESC = STMT_BOOKS_TAGS0 + "ORDER BY id DESC" + STMT_PAGE + ")"
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STMT_BOOKS_TAGS_TITLE_ASC = STMT_BOOKS_TAGS0 + "ORDER BY books.sort" + STMT_PAGE + ")"
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STMT_BOOKS_TAGS_TITLE_DESC = STMT_BOOKS_TAGS0 + "ORDER BY books.sort DESC" + STMT_PAGE + ")"
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STMT_BOOKS_AUTHORS_ID_ASC = STMT_BOOKS_AUTHORS0 + "ORDER BY id" + STMT_PAGE + ")"
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STMT_BOOKS_AUTHORS_ID_DESC = STMT_BOOKS_AUTHORS0 + "ORDER BY id DESC" + STMT_PAGE + ")"
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STMT_BOOKS_AUTHORS_TITLE_ASC = STMT_BOOKS_AUTHORS0 + "ORDER BY books.sort" + STMT_PAGE + ")"
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STMT_BOOKS_AUTHORS_TITLE_DESC = STMT_BOOKS_AUTHORS0 + "ORDER BY books.sort DESC" + STMT_PAGE + ")"
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STMT_SERIES_ID_ASC = STMT_SERIES0 + " ORDER BY series.id" + STMT_PAGE
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STMT_SERIES_ID_DESC = STMT_SERIES0 + " ORDER BY series.id DESC" + STMT_PAGE
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STMT_SERIES_NAME_ASC = STMT_SERIES0 + " ORDER BY series.sort" + STMT_PAGE
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STMT_SERIES_NAME_DESC = STMT_SERIES0 + " ORDER BY series.sort DESC" + STMT_PAGE
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STMT_SERIES_AUTHORS_ID_ASC = STMT_SERIES_AUTHORS0 + " ORDER BY series.id" + STMT_PAGE + ")"
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STMT_SERIES_AUTHORS_ID_DESC = STMT_SERIES_AUTHORS0 + " ORDER BY series.id DESC" + STMT_PAGE + ")"
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STMT_SERIES_AUTHORS_NAME_ASC = STMT_SERIES_AUTHORS0 + " ORDER BY series.sort" + STMT_PAGE + ")"
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STMT_SERIES_AUTHORS_NAME_DESC = STMT_SERIES_AUTHORS0 + " ORDER BY series.sort DESC" + STMT_PAGE + ")"
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STMT_SERIE = "SELECT series.id, series.name FROM series WHERE series.id = ?"
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STMT_SERIE_BOOKS = `SELECT books.id, title, series_index FROM books
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LEFT OUTER JOIN books_series_link ON books.id = books_series_link.book
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WHERE books_series_link.series = ? ORDER BY series_index ASC`
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STMT_SERIE_AUTHORS = `SELECT DISTINCT authors.id, authors.name
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FROM authors, books_authors_link, books_series_link
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WHERE books_authors_link.book = books_series_link.book AND books_authors_link.author = authors.id
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AND books_series_link.series = ?`
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STMT_AUTHORS_ID_ASC = STMT_AUTHORS0 + "ORDER BY authors.id " + STMT_PAGE
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STMT_AUTHORS_ID_DESC = STMT_AUTHORS0 + "ORDER BY authors.id DESC " + STMT_PAGE
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STMT_AUTHORS_NAME_ASC = STMT_AUTHORS0 + "ORDER BY authors.sort " + STMT_PAGE
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STMT_AUTHORS_NAME_DESC = STMT_AUTHORS0 + "ORDER BY authors.sort DESC " + STMT_PAGE
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STMT_AUTHOR_BOOKS = `SELECT books.id AS id,title,series_index,name as series_name,series.id AS series_id
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FROM books LEFT OUTER JOIN books_series_link ON books.id = books_series_link.book
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LEFT OUTER JOIN series ON series.id = books_series_link.series
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LEFT OUTER JOIN books_authors_link ON books.id = books_authors_link.book
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WHERE books_authors_link.author = ? ORDER BY id`
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STMT_AUTHOR_AUTHORS = `SELECT DISTINCT authors.id, authors.name
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FROM authors, books_authors_link WHERE books_authors_link.author = authors.id
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AND books_authors_link.book IN ( SELECT books.id FROM books LEFT OUTER JOIN books_authors_link
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ON books.id = books_authors_link.book WHERE books_authors_link.author = ? ORDER BY books.id)
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AND authors.id != ? ORDER BY authors.id`
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STMT_AUTHOR = "SELECT name FROM authors WHERE id = ?"
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DEF_LIM = 10
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BOOKS QueryType = iota
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BOOKS_TAGS QueryType = iota
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BOOKS_AUTHORS QueryType = iota
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BOOK QueryType = iota
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BOOK_TAGS QueryType = iota
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BOOK_DATA QueryType = iota
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BOOK_AUTHORS QueryType = iota
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BOOKS_COUNT QueryType = iota
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SERIES QueryType = iota
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SERIES_AUTHORS QueryType = iota
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SERIES_BOOKS QueryType = iota
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AUTHORS QueryType = iota
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AUTHOR QueryType = iota
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AUTHOR_BOOKS QueryType = iota
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AUTHOR_COAUTHORS QueryType = iota
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)
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var QUERIES = map[Query]string{
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Query{BOOKS, true, true}: STMT_BOOKS_TITLE_DESC,
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Query{BOOKS, true, false}: STMT_BOOKS_TITLE_ASC,
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Query{BOOKS, false, true}: STMT_BOOKS_ID_DESC,
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Query{BOOKS, false, false}: STMT_BOOKS_ID_ASC,
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Query{BOOKS_TAGS, true, true}: STMT_BOOKS_TAGS_TITLE_DESC,
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Query{BOOKS_TAGS, true, false}: STMT_BOOKS_TAGS_TITLE_ASC,
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Query{BOOKS_TAGS, false, true}: STMT_BOOKS_TAGS_ID_DESC,
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Query{BOOKS_TAGS, false, false}: STMT_BOOKS_TAGS_ID_ASC,
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Query{BOOKS_AUTHORS, true, true}: STMT_BOOKS_AUTHORS_TITLE_DESC,
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Query{BOOKS_AUTHORS, true, false}: STMT_BOOKS_AUTHORS_TITLE_ASC,
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Query{BOOKS_AUTHORS, false, true}: STMT_BOOKS_AUTHORS_ID_DESC,
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Query{BOOKS_AUTHORS, false, false}: STMT_BOOKS_AUTHORS_ID_ASC,
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Query{BOOK, false, false}: STMT_BOOK,
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Query{BOOK_TAGS, false, false}: STMT_BOOK_TAGS,
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Query{BOOK_DATA, false, false}: STMT_BOOK_DATA,
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Query{BOOK_AUTHORS, false, false}: STMT_BOOK_AUTHORS,
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Query{BOOKS_COUNT, false, false}: STMT_BOOKS_COUNT,
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Query{SERIES, false, false}: STMT_SERIE,
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Query{SERIES_AUTHORS, false, false}: STMT_SERIE_AUTHORS,
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Query{SERIES_BOOKS, false, false}: STMT_SERIE_BOOKS,
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Query{AUTHORS, true, true}: STMT_AUTHORS_NAME_DESC,
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Query{AUTHORS, true, false}: STMT_AUTHORS_NAME_ASC,
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Query{AUTHORS, false, true}: STMT_AUTHORS_ID_DESC,
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Query{AUTHORS, false, false}: STMT_AUTHORS_ID_ASC,
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Query{AUTHOR, false, false}: STMT_AUTHOR,
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Query{AUTHOR_BOOKS, false, false}: STMT_AUTHOR_BOOKS,
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Query{AUTHOR_COAUTHORS, false, false}: STMT_AUTHOR_AUTHORS,
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}
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var STMTS = make(map[Query]*sql.Stmt)
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type QueryType uint
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type Query struct {
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Type QueryType
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SortField bool // sort by name or title
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Desc bool
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}
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// PREPARED STATEMENTS //
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func (app *Bouquins) PrepareAll() error {
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errcount := 0
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for q, v := range QUERIES {
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stmt, err := app.DB.Prepare(v)
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if err != nil {
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log.Println(err, v)
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errcount++
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}
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STMTS[q] = stmt
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}
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if errcount > 0 {
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return errors.New(fmt.Sprintf("%d errors on queries, see logs", errcount))
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}
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return nil
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}
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// prepared statement with sort on books
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func (app *Bouquins) psSortBooks(qt QueryType, sort, order string) (*sql.Stmt, error) {
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return app.psSort("title", qt, sort, order)
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}
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func (app *Bouquins) psSortAuthors(qt QueryType, sort, order string) (*sql.Stmt, error) {
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return app.psSort("name", qt, sort, order)
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}
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func (app *Bouquins) psSort(sortNameField string, qt QueryType, sort, order string) (*sql.Stmt, error) {
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q := Query{qt, sort == sortNameField, order == "desc"}
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query := QUERIES[q]
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log.Println(query)
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stmt := STMTS[q]
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if stmt == nil {
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log.Println("Missing statement for ", q)
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var err error
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stmt, err = app.DB.Prepare(query)
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if err != nil {
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return nil, err
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}
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}
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return stmt, nil
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}
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// prepared statement without sort
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func (app *Bouquins) ps(qt QueryType) (*sql.Stmt, error) {
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return app.psSortBooks(qt, "", "")
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}
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